initial commit

IMG/cpio/ventoy/hook/alpine/udev_disk_hook.sh

@@ -0,0 +1,71 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+if [ "$SUBSYSTEM" != "block" ] || [ "$DEVTYPE" != "partition" ]; then    
+    exit 0
+fi
+
+if [ -b /dev/${MDEV:0:-1} ]; then
+    vtlog "/dev/${MDEV:0:-1} exist"
+else
+    $SLEEP 2
+fi
+
+if is_ventoy_hook_finished || not_ventoy_disk "${MDEV:0:-1}"; then
+    exit 0
+fi
+
+PATH=$BUSYBOX_PATH:$VTOY_PATH/tool:$PATH
+
+#
+# longpanda:
+# Alpine initramfs doesn't contain dm-mod or fuse module, 
+# and even the worse, the libpthread.so is not included too.
+# So here we directly dump the modloop squashfs file from disk to rootfs.
+# Fortunately, this file is not too big (< 100MB in alpine 3.11.3).
+# After that:
+#   1. mount the squashfs file
+#   2. find the dm-mod module from the mountpoint and insmod
+#   3. unmount and delete the squashfs file
+#
+
+vtoydm -i -f $VTOY_PATH/ventoy_image_map -d /dev/${MDEV:0:-1} > $VTOY_PATH/iso_file_list
+
+vtLine=$(grep '[-][-] modloop-lts ' $VTOY_PATH/iso_file_list)
+sector=$(echo $vtLine | awk '{print $(NF-1)}')
+length=$(echo $vtLine | awk '{print $NF}')
+
+vtoydm -e -f $VTOY_PATH/ventoy_image_map -d /dev/${MDEV:0:-1} -s $sector -l $length -o /vt_modloop
+
+mkdir -p $VTOY_PATH/mnt
+mount /vt_modloop $VTOY_PATH/mnt
+
+KoModPath=$(find $VTOY_PATH/mnt/ -name 'dm-mod.ko*')
+vtlog "insmod $KoModPath"
+insmod $KoModPath
+
+umount $VTOY_PATH/mnt
+rm -f /vt_modloop
+
+ventoy_udev_disk_common_hook "$MDEV" "noreplace"
+
+# OK finish
+set_ventoy_hook_finish

IMG/cpio/ventoy/hook/alpine/ventoy-hook.sh

@@ -0,0 +1,24 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+echo "-[-a-z0-9]*2 root:root 0666 @$BUSYBOX_PATH/sh $VTOY_PATH/hook/alpine/udev_disk_hook.sh" >> /mdev.conf
+$CAT /etc/mdev.conf >> /mdev.conf
+$BUSYBOX_PATH/mv /mdev.conf /etc/mdev.conf

IMG/cpio/ventoy/hook/arch/ventoy-hook.sh

@@ -0,0 +1,34 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+# some archlinux initramfs doesn't contain device-mapper udev rules file
+ARCH_UDEV_DIR=$(ventoy_get_udev_conf_dir)
+if [ -s "$ARCH_UDEV_DIR/13-dm-disk.rules" ]; then
+    echo 'dm-disk rule exist' >> $VTLOG
+else
+    echo 'Copy dm-disk rule file' >> $VTLOG
+    $CAT $VTOY_PATH/hook/default/13-dm-disk.rules > "$ARCH_UDEV_DIR/13-dm-disk.rules"
+fi
+
+# use default proc
+ventoy_systemd_udevd_work_around
+
+ventoy_add_udev_rule "$VTOY_PATH/hook/default/udev_disk_hook.sh %k"

IMG/cpio/ventoy/hook/debian/antix-disk.sh

@@ -0,0 +1,117 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+vtlog "####### $0 $* ########"
+
+VTPATH_OLD=$PATH; PATH=$BUSYBOX_PATH:$VTOY_PATH/tool:$PATH
+
+
+ventoy_os_install_dmsetup_by_unsquashfs() {
+    vtlog "ventoy_os_install_dmsetup_by_unsquashfs $*"
+    
+    vtKoPo=$(ventoy_get_module_postfix)
+    vtlog "vtKoPo=$vtKoPo"
+
+    vtoydm -i -f $VTOY_PATH/ventoy_image_map -d $1 > $VTOY_PATH/iso_file_list
+
+    vtline=$(grep '[-][-] linuxfs '  $VTOY_PATH/iso_file_list)    
+    sector=$(echo $vtline | awk '{print $(NF-1)}')
+    length=$(echo $vtline | awk '{print $NF}')
+    
+    vtoydm -E -f $VTOY_PATH/ventoy_image_map -d $1 -s $sector -l $length -o $VTOY_PATH/fsdisk
+    
+    dmModPath="/usr/lib/modules/$vtKerVer/kernel/drivers/md/dm-mod.$vtKoPo"
+    echo $dmModPath > $VTOY_PATH/fsextract
+    vtoy_unsquashfs -d $VTOY_PATH/sqfs -n -q -e $VTOY_PATH/fsextract $VTOY_PATH/fsdisk
+
+    if ! [ -e $VTOY_PATH/sqfs${dmModPath} ]; then
+        dmModPath="/lib/modules/$vtKerVer/kernel/drivers/md/dm-mod.$vtKoPo"
+        echo $dmModPath > $VTOY_PATH/fsextract
+        vtoy_unsquashfs -d $VTOY_PATH/sqfs -n -q -e $VTOY_PATH/fsextract $VTOY_PATH/fsdisk
+    fi
+    
+    if [ -e $VTOY_PATH/sqfs${dmModPath} ]; then
+        vtlog "success $VTOY_PATH/sqfs${dmModPath}"
+        insmod $VTOY_PATH/sqfs${dmModPath}
+    else
+        false
+    fi
+}
+
+
+ventoy_os_install_dmsetup_by_fuse() {
+    vtlog "ventoy_os_install_dmsetup_by_fuse $*"
+
+    mkdir -p $VTOY_PATH/mnt/fuse $VTOY_PATH/mnt/iso $VTOY_PATH/mnt/squashfs
+
+    vtoydm -p -f $VTOY_PATH/ventoy_image_map -d $1 > $VTOY_PATH/ventoy_dm_table
+    vtoy_fuse_iso -f $VTOY_PATH/ventoy_dm_table -m $VTOY_PATH/mnt/fuse
+
+    mount -t iso9660  $VTOY_PATH/mnt/fuse/ventoy.iso    $VTOY_PATH/mnt/iso
+    mount -t squashfs $VTOY_PATH/mnt/iso/antiX/linuxfs  $VTOY_PATH/mnt/squashfs
+
+    KoName=$(ls $VTOY_PATH/mnt/squashfs/lib/modules/$2/kernel/drivers/md/dm-mod.ko*)
+    vtlog "insmod $KoName"
+    insmod $KoName
+
+    umount $VTOY_PATH/mnt/squashfs
+    umount $VTOY_PATH/mnt/iso
+    umount $VTOY_PATH/mnt/fuse
+}
+
+
+ventoy_os_install_dmsetup() {
+    vtlog "ventoy_os_install_dmsetup"
+    
+    if grep -q 'device-mapper' /proc/devices; then
+        vtlog "device-mapper module already loaded"
+        return;
+    fi
+    
+    vtKerVer=$(uname -r)
+    
+    if ventoy_os_install_dmsetup_by_unsquashfs $1 $vtKerVer; then
+        vtlog "unsquashfs success"
+    else
+        if modprobe fuse 2>>$VTLOG; then
+            ventoy_os_install_dmsetup_by_fuse $1 $vtKerVer
+        fi
+    fi
+}
+
+vtdiskname=$(get_ventoy_disk_name)
+if [ "$vtdiskname" = "unknown" ]; then
+    vtlog "ventoy disk not found"
+    PATH=$VTPATH_OLD
+    exit 0
+fi
+
+ventoy_os_install_dmsetup $vtdiskname
+
+ventoy_udev_disk_common_hook "${vtdiskname#/dev/}2" "noreplace"
+
+if ! [ -e $VTOY_DM_PATH ]; then
+    blkdev_num=$($VTOY_PATH/tool/dmsetup ls | grep ventoy | sed 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
+    mknod -m 0666 $VTOY_DM_PATH b $blkdev_num
+fi
+
+PATH=$VTPATH_OLD
+

IMG/cpio/ventoy/hook/debian/antix-hook.sh

@@ -0,0 +1,29 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+if $GREP -q 'FILTERED_LIST=[^a-zA-Z0-9_]*$' /init; then
+    $SED 's#FILTERED_LIST=[^a-zA-Z0-9_]*$#FILTERED_LIST=/dev/mapper/ventoy#' -i /init
+elif $GREP -q '\[ "$FILTERED_LIST" \]' /init; then
+    $SED '/\[ "$FILTERED_LIST" \]/i\    FILTERED_LIST="/dev/mapper/ventoy $FILTERED_LIST"' -i /init
+fi
+
+$SED -i "/_search_for_boot_device_/a\ $BUSYBOX_PATH/sh $VTOY_PATH/hook/debian/antix-disk.sh" /init
+
+# for debug
+#$SED -i "/^linuxfs_error/a\exec $VTOY_PATH/busybox/sh" /init

IMG/cpio/ventoy/hook/debian/default-hook.sh

@@ -0,0 +1,21 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+ventoy_systemd_udevd_work_around
+ventoy_add_udev_rule "$VTOY_PATH/hook/debian/udev_disk_hook.sh %k"

IMG/cpio/ventoy/hook/debian/udev_disk_hook.sh

@@ -0,0 +1,111 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+ventoy_os_install_dmsetup() {
+
+    vt_usb_disk=$1
+
+    # dump iso file location
+    $VTOY_PATH/tool/vtoydm -i -f $VTOY_PATH/ventoy_image_map -d ${vt_usb_disk} > $VTOY_PATH/iso_file_list
+
+    # install dmsetup 
+    LINE=$($GREP ' dmsetup.*\.udeb'  $VTOY_PATH/iso_file_list)
+    if [ $? -eq 0 ]; then
+        install_udeb_from_line "$LINE" ${vt_usb_disk}
+    fi
+
+    # install libdevmapper
+    LINE=$($GREP ' libdevmapper.*\.udeb'  $VTOY_PATH/iso_file_list)
+    if [ $? -eq 0 ]; then
+        install_udeb_from_line "$LINE" ${vt_usb_disk}
+    fi
+
+    # install md-modules
+    LINE=$($GREP ' md-modules.*\.udeb'  $VTOY_PATH/iso_file_list)
+    if [ $? -eq 0 ]; then
+        install_udeb_from_line "$LINE" ${vt_usb_disk} 
+    fi
+
+    # insmod md-mod if needed
+    if $GREP -q 'device-mapper' /proc/devices; then
+        vtlog "device mapper module is loaded"
+    else
+        vtlog"device mapper module is NOT loaded, now load it..."
+        
+        VER=$($BUSYBOX_PATH/uname -r)    
+        KO=$($FIND /lib/modules/$VER/kernel/drivers/md -name "dm-mod*")
+        vtlog "KO=$KO"
+        
+        insmod $KO
+    fi
+    
+    vtlog "dmsetup install finish, now check it..."
+    if dmsetup info >> $VTLOG 2>&1; then
+        vtlog "dmsetup work ok"
+    else
+        vtlog "dmsetup not work, now try to load eglibc ..."
+        
+        # install eglibc (some ubuntu 32 bit version need it)
+        LINE=$($GREP 'libc6-.*\.udeb'  $VTOY_PATH/iso_file_list)
+        if [ $? -eq 0 ]; then
+            install_udeb_from_line "$LINE" ${vt_usb_disk} 
+        fi
+        
+        if dmsetup info >> $VTLOG 2>&1; then
+            vtlog "dmsetup work ok after retry"
+        else
+            vtlog "dmsetup still not work after retry"
+        fi
+    fi
+}
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    exit 0
+fi
+
+dmsetup_path=$(ventoy_find_bin_path dmsetup)
+if [ -z "$dmsetup_path" ]; then
+    ventoy_os_install_dmsetup "/dev/${1:0:-1}"
+fi
+
+ventoy_udev_disk_common_hook $*
+
+#
+# Some distro default only accept usb partitions as install medium.
+# So if ventoy is installed on a non-USB device, we just mount /cdrom here except
+# for these has boot=live or boot=casper parameter in cmdline
+#
+if echo $ID_BUS | $GREP -q -i usb; then
+    vtlog "$1 is USB device"
+else
+    vtlog "$1 is NOT USB device (bus $ID_BUS)"
+    
+    if $EGREP -q 'boot=|casper' /proc/cmdline; then
+        vtlog "boot=, or casper, don't mount"
+    else
+        vtlog "No boot param, need to mount"
+        $BUSYBOX_PATH/mkdir /cdrom
+        $BUSYBOX_PATH/mount -t iso9660 $VTOY_DM_PATH  /cdrom
+    fi
+fi
+
+# OK finish
+set_ventoy_hook_finish

IMG/cpio/ventoy/hook/debian/ventoy-hook.sh

@@ -0,0 +1,31 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+DISTRO='default'
+
+if [ -e /etc/initrd-release ]; then
+    if $EGREP -q "ID=.*antix|ID=.*mx" /etc/initrd-release; then
+        DISTRO='antix'
+    fi
+fi
+
+echo "##### distribution = $DISTRO ######" >> $VTLOG
+. $VTOY_PATH/hook/debian/${DISTRO}-hook.sh

IMG/cpio/ventoy/hook/default/13-dm-disk.rules

@@ -0,0 +1,42 @@
+# Copyright (C) 2009 Red Hat, Inc. All rights reserved.
+#
+# This file is part of LVM2.
+
+# Udev rules for device-mapper devices.
+#
+# These rules create symlinks in /dev/disk directory.
+# Symlinks that depend on probing filesystem type,
+# label and uuid are created only if the device is not
+# suspended.
+
+# "add" event is processed on coldplug only!
+ACTION!="add|change", GOTO="dm_end"
+ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="dm_end"
+ENV{DM_UDEV_DISABLE_DISK_RULES_FLAG}=="1", GOTO="dm_end"
+
+SYMLINK+="disk/by-id/dm-name-$env{DM_NAME}"
+ENV{DM_UUID}=="?*", SYMLINK+="disk/by-id/dm-uuid-$env{DM_UUID}"
+
+ENV{DM_SUSPENDED}=="1", GOTO="dm_end"
+ENV{DM_NOSCAN}=="1", GOTO="dm_watch"
+
+IMPORT{builtin}="blkid"
+ENV{DM_UDEV_LOW_PRIORITY_FLAG}=="1", OPTIONS="link_priority=-100"
+ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
+ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"
+ENV{ID_PART_ENTRY_UUID}=="?*", SYMLINK+="disk/by-partuuid/$env{ID_PART_ENTRY_UUID}"
+ENV{ID_PART_ENTRY_SCHEME}=="gpt", ENV{ID_PART_ENTRY_NAME}=="?*", SYMLINK+="disk/by-partlabel/$env{ID_PART_ENTRY_NAME}"
+ENV{ID_PART_ENTRY_SCHEME}=="gpt", ENV{ID_PART_GPT_AUTO_ROOT}=="1", SYMLINK+="gpt-auto-root"
+
+# Add inotify watch to track changes on this device.
+# Using the watch rule is not optimal - it generates a lot of spurious
+# and useless events whenever the device opened for read-write is closed.
+# The best would be to generete the event directly in the tool changing
+# relevant information so only relevant events will be processed
+# (like creating a filesystem, changing filesystem label etc.).
+#
+# But let's use this until we have something better...
+LABEL="dm_watch"
+OPTIONS+="watch"
+
+LABEL="dm_end"

IMG/cpio/ventoy/hook/default/udev_disk_hook.sh

@@ -0,0 +1,30 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    exit 0
+fi
+
+ventoy_udev_disk_common_hook $*
+
+# OK finish
+set_ventoy_hook_finish
+

IMG/cpio/ventoy/hook/default/ventoy-hook.sh

@@ -0,0 +1,24 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+ventoy_systemd_udevd_work_around
+
+ventoy_add_udev_rule "$VTOY_PATH/hook/default/udev_disk_hook.sh %k"

IMG/cpio/ventoy/hook/gentoo/disk_hook.sh

@@ -0,0 +1,36 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+# Just for KVM test enviroment
+$BUSYBOX_PATH/modprobe virtio_blk 2>/dev/null
+$BUSYBOX_PATH/modprobe virtio_pci 2>/dev/null
+
+for i in 0 1 2 3 4 5 6 7 8 9; do 
+    vtdiskname=$(get_ventoy_disk_name)
+    if [ "$vtdiskname" = "unknown" ]; then
+        vtlog "wait for disk ..."
+        $SLEEP 2
+    else
+        break
+    fi
+done
+
+ventoy_udev_disk_common_hook "${vtdiskname#/dev/}2" "noreplace"

IMG/cpio/ventoy/hook/gentoo/ventoy-hook.sh

@@ -0,0 +1,27 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+if [ -d /etc/udev/rules.d ]; then    
+    ventoy_systemd_udevd_work_around
+    ventoy_add_udev_rule "$VTOY_PATH/hook/default/udev_disk_hook.sh %k noreplace"
+else
+    $SED "/mdev *-s/a\ $BUSYBOX_PATH/sh $VTOY_PATH/hook/gentoo/disk_hook.sh"  -i /init
+fi

IMG/cpio/ventoy/hook/kaos/udev_disk_hook.sh

@@ -0,0 +1,39 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    exit 0
+fi
+
+VTPATH_OLD=$PATH; PATH=$BUSYBOX_PATH:$VTOY_PATH/tool:$PATH
+
+modprobe fuse
+mkdir -p $VTOY_PATH/mnt/fuse $VTOY_PATH/mnt/iso
+
+vtoydm -p -f $VTOY_PATH/ventoy_image_map -d "/dev/${1:0:-1}" > $VTOY_PATH/ventoy_dm_table
+vtoy_fuse_iso -f $VTOY_PATH/ventoy_dm_table -m $VTOY_PATH/mnt/fuse
+mount -t iso9660 $VTOY_PATH/mnt/fuse/ventoy.iso  $VTOY_PATH/mnt/iso
+
+# OK finish
+set_ventoy_hook_finish
+
+PATH=$VTPATH_OLD
+

IMG/cpio/ventoy/hook/kaos/ventoy-hook.sh

@@ -0,0 +1,6 @@
+#!/ventoy/busybox/sh
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+ventoy_systemd_udevd_work_around
+ventoy_add_udev_rule "$VTOY_PATH/hook/kaos/udev_disk_hook.sh %k"

IMG/cpio/ventoy/hook/mageia/udev_disk_hook.sh

@@ -0,0 +1,40 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    exit 0
+fi
+
+ventoy_udev_disk_common_hook $*
+
+#
+# cheatcode for mageia
+#
+# From mageia/soft/drakx/mdk-stage1 source code, we see that the stage1 binary will search 
+# /tmp/syslog file to determin whether there is a DAC960 cdrom in the system.
+# So we insert some string to /tmp/syslog file to cheat the stage1 program.
+#
+$BUSYBOX_PATH/mkdir -p /dev/rd
+ventoy_copy_device_mapper "/dev/rd/ventoy"
+echo 'ventoy cheatcode /dev/rd/ventoy:  model' >> /tmp/syslog
+
+# OK finish
+set_ventoy_hook_finish

IMG/cpio/ventoy/hook/mageia/ventoy-hook.sh

@@ -0,0 +1,7 @@
+#!/ventoy/busybox/sh
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+ventoy_systemd_udevd_work_around
+
+ventoy_add_udev_rule "$VTOY_PATH/hook/mageia/udev_disk_hook.sh %k noreplace"

IMG/cpio/ventoy/hook/manjaro/ventoy-hook.sh

@@ -0,0 +1,33 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+# some distro initramfs doesn't contain device-mapper udev rules file
+DISTRO_UDEV_DIR=$(ventoy_get_udev_conf_dir)
+if [ -s "$DISTRO_UDEV_DIR/13-dm-disk.rules" ]; then
+    echo 'dm-disk rule exist' >> $VTLOG
+else
+    echo 'Copy dm-disk rule file' >> $VTLOG
+    $CAT $VTOY_PATH/hook/default/13-dm-disk.rules > "$DISTRO_UDEV_DIR/13-dm-disk.rules"
+fi
+
+ventoy_systemd_udevd_work_around
+
+ventoy_add_udev_rule "$VTOY_PATH/hook/default/udev_disk_hook.sh %k"

IMG/cpio/ventoy/hook/nixos/udev_disk_hook.sh

@@ -0,0 +1,30 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    exit 0
+fi
+
+ventoy_udev_disk_common_hook $*
+
+# OK finish
+set_ventoy_hook_finish
+

IMG/cpio/ventoy/hook/nixos/ventoy-hook.sh

@@ -0,0 +1,25 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+vtRuleFile=$($FIND / -name '*.rules' -type f | $GREP udev | $HEAD -n1)
+
+ventoy_add_udev_rule_with_path "$VTOY_PATH/hook/default/udev_disk_hook.sh %k noreplace" "${vtRuleFile%/*}/99-ventoy.rules"
+

IMG/cpio/ventoy/hook/pclos/disk_hook.sh

@@ -0,0 +1,72 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+VTPATH_OLD=$PATH; PATH=$BUSYBOX_PATH:$VTOY_PATH/tool:$PATH
+
+ventoy_os_install_device_mapper_by_unsquashfs() {
+    vtlog "ventoy_os_install_device_mapper_by_unsquashfs $*"
+    
+    vtKoExt=$(ventoy_get_module_postfix)
+    vtlog "vtKoExt=$vtKoExt"
+
+    vtoydm -i -f $VTOY_PATH/ventoy_image_map -d $1 > $VTOY_PATH/iso_file_list
+
+    vtline=$(grep '[-][-] livecd.sqfs '  $VTOY_PATH/iso_file_list)    
+    sector=$(echo $vtline | awk '{print $(NF-1)}')
+    length=$(echo $vtline | awk '{print $NF}')
+    
+    vtoydm -E -f $VTOY_PATH/ventoy_image_map -d $1 -s $sector -l $length -o $VTOY_PATH/fsdisk
+    
+    dmModPath="/lib/modules/$2/kernel/drivers/md/dm-mod.$vtKoExt"
+    echo $dmModPath > $VTOY_PATH/fsextract
+    vtoy_unsquashfs -d $VTOY_PATH/sqfs -n -q -e $VTOY_PATH/fsextract $VTOY_PATH/fsdisk
+
+    if [ -e $VTOY_PATH/sqfs${dmModPath} ]; then
+        vtlog "success $VTOY_PATH/sqfs${dmModPath}"
+        insmod $VTOY_PATH/sqfs${dmModPath}
+    else
+        false
+    fi
+}
+
+
+ventoy_os_install_device_mapper() {
+    vtlog "ventoy_os_install_device_mapper"
+    
+    if grep -q 'device-mapper' /proc/devices; then
+        vtlog "device-mapper module already loaded"
+        return;
+    fi
+    
+    vtKerVer=$(uname -r)
+    if ventoy_os_install_device_mapper_by_unsquashfs $1 $vtKerVer; then
+        vtlog "unsquashfs success"
+    else
+        vterr "unsquashfs failed"
+    fi
+}
+
+vtdiskname=$(get_ventoy_disk_name)
+ventoy_os_install_device_mapper $vtdiskname
+
+ventoy_udev_disk_common_hook "${vtdiskname#/dev/}2"
+
+PATH=$VTPATH_OLD

IMG/cpio/ventoy/hook/pclos/ventoy-hook.sh

@@ -0,0 +1,57 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+# Step 1: dd initrd file to ramdisk
+vtRamdiskFile=$($BUSYBOX_PATH/ls /initrd* | $HEAD -n1)
+$BUSYBOX_PATH/mknod -m 0666 /ram0 b 1 0
+$BUSYBOX_PATH/dd if=$vtRamdiskFile of=/ram0 status=none
+$BUSYBOX_PATH/rm -f $vtRamdiskFile
+
+# Step 2: mount ramdisk
+$BUSYBOX_PATH/mkdir -p /ventoy_rdroot
+ventoy_close_printk
+$BUSYBOX_PATH/mount /ram0 /ventoy_rdroot
+ventoy_restore_printk
+
+# Step 3: Copy ventoy tool to new root directory.
+# Here we make a tmpfs mount to avoid ramdisk out of space (additional space is for log).
+vtSize=$($BUSYBOX_PATH/du -m -s $VTOY_PATH | $BUSYBOX_PATH/awk '{print $1}')
+let vtSize=vtSize+4
+
+$BUSYBOX_PATH/mkdir -p /ventoy_rdroot/ventoy
+$BUSYBOX_PATH/mount -t tmpfs -o size=${vtSize}m tmpfs /ventoy_rdroot/ventoy
+$BUSYBOX_PATH/cp -a /ventoy/* /ventoy_rdroot/ventoy/
+
+
+# Step 4: add hook in linuxrc&rc.sysinit script file
+vtLine=$($GREP -n "^find_cdrom" /ventoy_rdroot/linuxrc | $GREP -v '(' | $AWK -F: '{print $1}')
+$SED "$vtLine aif test -d /ventoy; then $BUSYBOX_PATH/sh $VTOY_PATH/hook/pclos/disk_hook.sh; fi" -i /ventoy_rdroot/linuxrc
+$SED "$vtLine aif test -d /initrd/ventoy; then ln -s /initrd/ventoy /ventoy; fi" -i /ventoy_rdroot/linuxrc
+
+
+vtRcInit=$($BUSYBOX_PATH/tail /ventoy_rdroot/linuxrc | $GREP 'exec ' | $AWK '{print $2}')
+if [ -e /ventoy_rdroot$vtRcInit ]; then
+    vtRcInit=/ventoy_rdroot$vtRcInit
+else
+    vtRcInit=/ventoy_rdroot/etc/rc.d/rc.sysinit
+fi
+
+echo 'exec /sbin/init' >> $vtRcInit

IMG/cpio/ventoy/hook/rhel5/ventoy-hook.sh

@@ -0,0 +1,23 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+#if [ -e $VTOY_PATH/hook/rhel5/loader ]; then
+#    $BUSYBOX_PATH/cp -a $VTOY_PATH/hook/rhel5/loader  /sbin/loader
+#fi
+#$BUSYBOX_PATH/cp -a $VTOY_PATH/hook/rhel5/ventoy-loader.sh  $VTOY_PATH/tool/

IMG/cpio/ventoy/hook/rhel5/ventoy-loader.sh

@@ -0,0 +1,70 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+ventoy_os_install_dmsetup() {
+    vtlog "ventoy_os_install_dmsetup $1"
+    
+    vt_usb_disk=$1
+    
+    # dump iso file location
+    $VTOY_PATH/tool/vtoydm -i -f $VTOY_PATH/ventoy_image_map -d ${vt_usb_disk} > $VTOY_PATH/iso_file_list
+
+    # install dmsetup 
+    LINE=$($GREP 'minstg2.img'  $VTOY_PATH/iso_file_list)
+    if [ $? -eq 0 ]; then
+        extract_file_from_line "$LINE" ${vt_usb_disk} /tmp/minstg2.img
+        
+        mkdir -p /tmp/ramfs/minstg2.img
+        mount -t squashfs  /tmp/minstg2.img   /tmp/ramfs/minstg2.img
+        
+        $BUSYBOX_PATH/ln -s /tmp/ramfs/minstg2.img/lib64 /lib64
+        $BUSYBOX_PATH/ln -s /tmp/ramfs/minstg2.img/usr /usr
+    fi
+
+    vtlog "dmsetup install finish, now check it..."
+    
+    dmsetup_path=$(ventoy_find_bin_path dmsetup)
+    if [ -z "$dmsetup_path" ]; then
+        vterr "dmsetup still not found after install"
+    elif $dmsetup_path info >> $VTLOG 2>&1; then
+        vtlog "$dmsetup_path work ok"
+    else
+        vterr "$dmsetup_path not work"
+    fi
+}
+
+vtlog "##### $0 $* ########"
+
+vtdiskname=$(get_ventoy_disk_name)
+
+dmsetup_path=$(ventoy_find_bin_path dmsetup)
+if [ -z "$dmsetup_path" ]; then
+    ventoy_os_install_dmsetup "$vtdiskname"
+    ventoy_udev_disk_common_hook "${vtdiskname#/dev/}2" "noreplace"
+    
+    $BUSYBOX_PATH/unlink /lib64
+    $BUSYBOX_PATH/unlink /usr
+    umount /tmp/ramfs/minstg2.img
+    rm -rf /tmp/ramfs/minstg2.img
+    rm -f /tmp/minstg2.img 
+else
+    ventoy_udev_disk_common_hook "${vtdiskname#/dev/}2" "noreplace"
+fi

IMG/cpio/ventoy/hook/rhel6/anaconda-repo-listen.sh

@@ -0,0 +1,20 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+sed -i "s/^enabled.*/enabled=0/g" $2/$3

IMG/cpio/ventoy/hook/rhel6/udev_disk_hook.sh

@@ -0,0 +1,85 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+ventoy_os_install_dmsetup() {
+    vtlog "ventoy_os_install_dmsetup $1"
+    
+    vt_usb_disk=$1
+
+    $BUSYBOX_PATH/modprobe dm-mod
+    $BUSYBOX_PATH/modprobe linear
+    
+    # dump iso file location
+    $VTOY_PATH/tool/vtoydm -i -f $VTOY_PATH/ventoy_image_map -d ${vt_usb_disk} > $VTOY_PATH/iso_file_list
+
+    # install dmsetup 
+    LINE=$($GREP 'device-mapper-[0-9].*\.rpm'  $VTOY_PATH/iso_file_list)
+    if [ $? -eq 0 ]; then
+        install_rpm_from_line "$LINE" ${vt_usb_disk}
+    fi
+
+    vtlog "dmsetup install finish, now check it..."
+    
+    dmsetup_path=$(ventoy_find_bin_path dmsetup)
+    if [ -z "$dmsetup_path" ]; then
+        vterr "dmsetup still not found after install"
+    elif $dmsetup_path info >> $VTLOG 2>&1; then
+        vtlog "$dmsetup_path work ok"
+    else
+        vterr "$dmsetup_path not work"
+    fi
+}
+
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    # /dev/loop7 come first
+    if [ "$1" = "loop7" ] && [ -b $VTOY_DM_PATH ]; then
+        ventoy_copy_device_mapper  /dev/loop7
+    fi
+    exit 0
+fi
+
+dmsetup_path=$(ventoy_find_bin_path dmsetup)
+if [ -z "$dmsetup_path" ]; then
+    ventoy_os_install_dmsetup "/dev/${1:0:-1}"
+fi
+
+
+#some distro add there repo file to /etc/anaconda.repos.d/ which will cause error during installation
+$BUSYBOX_PATH/nohup $VTOY_PATH/tool/inotifyd $VTOY_PATH/hook/rhel6/anaconda-repo-listen.sh /etc/anaconda.repos.d:n &  
+
+ventoy_udev_disk_common_hook $* "noreplace"
+
+$BUSYBOX_PATH/mount $VTOY_DM_PATH /mnt/ventoy
+
+# 
+# We do a trick for rhel6 series here.
+# Use /dev/loop7 and wapper it as a removable cdrom with bind mount.
+# Then the anaconda installer will accept /dev/loop7 as the install medium.
+#
+ventoy_copy_device_mapper  /dev/loop7
+
+$BUSYBOX_PATH/cp -a /sys/devices/virtual/block/loop7 /tmp/ >> $VTLOG 2>&1
+echo 19 > /tmp/loop7/capability
+$BUSYBOX_PATH/mount --bind /tmp/loop7 /sys/block/loop7 >> $VTLOG 2>&1
+
+# OK finish
+set_ventoy_hook_finish

IMG/cpio/ventoy/hook/rhel6/ventoy-hook.sh

@@ -0,0 +1,27 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+$BUSYBOX_PATH/mkdir -p /etc/anaconda.repos.d  /mnt/ventoy
+ventoy_print_yum_repo "ventoy" "file:///mnt/ventoy" > /etc/anaconda.repos.d/ventoy.repo
+
+
+ventoy_add_udev_rule "$VTOY_PATH/hook/rhel6/udev_disk_hook.sh %k"
+ventoy_add_kernel_udev_rule "loop7" "$VTOY_PATH/hook/rhel6/udev_disk_hook.sh %k"

IMG/cpio/ventoy/hook/rhel7/ventoy-hook.sh

@@ -0,0 +1,29 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+ventoy_systemd_udevd_work_around
+
+ventoy_add_udev_rule "$VTOY_PATH/hook/default/udev_disk_hook.sh %k noreplace"
+
+# suppress write protected mount warning
+if [ -e /usr/sbin/anaconda-diskroot ]; then
+    $SED  's/^mount $dev $repodir/mount -oro $dev $repodir/' -i /usr/sbin/anaconda-diskroot
+fi

IMG/cpio/ventoy/hook/slackware/udev_disk_hook.sh

@@ -0,0 +1,41 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    exit 0
+fi
+
+ventoy_udev_disk_common_hook $*
+
+#
+# make a fake cdrom link
+#
+if [ -e /dev/sr3 ]; then
+    if ! [ -e /dev/hdp ]; then
+        ln -s $VTOY_DM_PATH /dev/hdp
+    fi
+else
+    ln -s $VTOY_DM_PATH /dev/sr3
+fi
+
+# OK finish
+set_ventoy_hook_finish
+

IMG/cpio/ventoy/hook/slackware/ventoy-hook.sh

@@ -0,0 +1,8 @@
+#!/ventoy/busybox/sh
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+ventoy_systemd_udevd_work_around
+
+ventoy_add_udev_rule "$VTOY_PATH/hook/slackware/udev_disk_hook.sh %k noreplace"
+

IMG/cpio/ventoy/hook/suse/udev_disk_hook.sh

@@ -0,0 +1,60 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+ventoy_os_install_dmsetup() {
+    vtlog "ventoy_os_install_dmsetup $1"
+    
+    vt_usb_disk=$1
+
+    # dump iso file location
+    $VTOY_PATH/tool/vtoydm -i -f $VTOY_PATH/ventoy_image_map -d ${vt_usb_disk} > $VTOY_PATH/iso_file_list
+
+    # install dmsetup 
+    LINE=$($GREP 'device-mapper-[0-9]\..*\.rpm'  $VTOY_PATH/iso_file_list)
+    if [ $? -eq 0 ]; then
+        install_rpm_from_line "$LINE" ${vt_usb_disk}
+    fi
+
+    vtlog "dmsetup install finish, now check it..."
+    
+    dmsetup_path=$(ventoy_find_bin_path dmsetup)
+    if [ -z "$dmsetup_path" ]; then
+        vterr "dmsetup still not found after install"
+    elif $dmsetup_path info >> $VTLOG 2>&1; then
+        vtlog "$dmsetup_path work ok"
+    else
+        vterr "$dmsetup_path not work"
+    fi
+}
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    exit 0
+fi
+
+dmsetup_path=$(ventoy_find_bin_path dmsetup)
+if [ -z "$dmsetup_path" ]; then
+    ventoy_os_install_dmsetup "/dev/${1:0:-1}"
+fi
+
+ventoy_udev_disk_common_hook $*
+
+# OK finish
+set_ventoy_hook_finish

IMG/cpio/ventoy/hook/suse/ventoy-hook.sh

@@ -0,0 +1,24 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+ventoy_systemd_udevd_work_around
+
+ventoy_add_udev_rule "$VTOY_PATH/hook/suse/udev_disk_hook.sh %k"

IMG/cpio/ventoy/hook/tinycore/udev_disk_hook.sh

@@ -0,0 +1,45 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    exit 0
+fi
+
+# TinyCore linux distro doesn't contain dmsetup, we use aoe here
+sudo $BUSYBOX_PATH/modprobe aoe aoe_iflist=lo
+if [ -e /sys/module/aoe ]; then
+    VBLADE_BIN=$(ventoy_get_vblade_bin)
+    sudo $VBLADE_BIN -r -f $VTOY_PATH/ventoy_image_map 9 0 lo "/dev/${1:0:-1}" &
+
+    while ! [ -b /dev/etherd/e9.0 ]; do
+        vtlog 'Wait for /dev/etherd/e9.0 ....'
+        $SLEEP 0.1
+    done
+
+    sudo $BUSYBOX_PATH/cp -a /dev/etherd/e9.0  "/dev/$1"
+
+    ventoy_find_bin_run rebuildfstab
+else
+    vterr "aoe driver module load failed..."
+fi
+
+# OK finish
+set_ventoy_hook_finish

IMG/cpio/ventoy/hook/tinycore/ventoy-hook.sh

@@ -0,0 +1,24 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+ventoy_systemd_udevd_work_around
+
+ventoy_add_udev_rule_with_name "$VTOY_PATH/hook/tinycore/udev_disk_hook.sh %k" "90-ventoy.rules"

IMG/cpio/ventoy/hook/ventoy-hook-lib.sh

@@ -0,0 +1,424 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+VTOY_PATH=/ventoy
+BUSYBOX_PATH=$VTOY_PATH/busybox
+VTLOG=$VTOY_PATH/log
+FIND=$BUSYBOX_PATH/find
+GREP=$BUSYBOX_PATH/grep
+EGREP=$BUSYBOX_PATH/egrep
+CAT=$BUSYBOX_PATH/cat
+AWK=$BUSYBOX_PATH/awk
+SED=$BUSYBOX_PATH/sed
+SLEEP=$BUSYBOX_PATH/sleep
+HEAD=$BUSYBOX_PATH/head
+VTOY_DM_PATH=/dev/mapper/ventoy
+VTOY_DEBUG_LEVEL=$($BUSYBOX_PATH/hexdump -n 1 -s 430 -e '1/1 "%02x"' $VTOY_PATH/ventoy_os_param)
+
+if [ "$VTOY_DEBUG_LEVEL" = "01" ]; then
+    if [ -e /dev/console ]; then
+        VTLOG=/dev/console
+    fi
+fi
+
+vtlog() {
+    if [ "$VTLOG" = "$VTOY_PATH/log" ]; then
+        echo "$*" >>$VTLOG
+    else
+        echo -e "\033[32m $* \033[0m" > $VTLOG
+        $SLEEP 2
+    fi
+}
+
+vterr() {
+    if [ "$VTLOG" = "$VTOY_PATH/log" ]; then
+        echo "$*" >>$VTLOG
+    else
+        echo -e "\n\033[31m $* \033[0m" > $VTLOG
+        $SLEEP 30
+    fi
+}
+
+
+is_ventoy_hook_finished() {
+	[ -e $VTOY_PATH/hook_finish ]
+}
+
+set_ventoy_hook_finish() {
+	echo 'Y' > $VTOY_PATH/hook_finish
+}
+
+get_ventoy_disk_name() {	
+    line=$($VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param)
+    if [ $? -eq 0 ]; then
+        echo ${line%%#*}
+    else    
+        echo "unknown"
+    fi
+}
+
+get_ventoy_iso_name() {
+	line=$($VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param)
+    if [ $? -eq 0 ]; then
+        echo ${line##*#}
+    else    
+        echo "unknown"
+    fi
+}
+
+wait_for_usb_disk_ready() {
+	while [ -n "Y" ]; do
+		usb_disk=$(get_ventoy_disk_name)
+        vtlog "wait_for_usb_disk_ready $usb_disk ..."
+        
+		if [ -e "${usb_disk}2" ]; then
+            vtlog "wait_for_usb_disk_ready $usb_disk finish"
+			break
+		else
+			$SLEEP 0.3
+		fi
+	done
+}
+
+is_ventoy_disk() {
+    if $VTOY_PATH/tool/vtoydump -f $VTOY_PATH/ventoy_os_param -c "$1"; then
+        $BUSYBOX_PATH/true
+    else
+        $BUSYBOX_PATH/false
+    fi
+}
+
+not_ventoy_disk() {
+    if $VTOY_PATH/tool/vtoydump -f $VTOY_PATH/ventoy_os_param -c "$1"; then
+        $BUSYBOX_PATH/false
+    else
+        $BUSYBOX_PATH/true
+    fi
+}
+
+ventoy_get_vblade_bin() {
+    if $VTOY_PATH/tool/vblade_64 -t >>$VTLOG 2>&1; then
+        echo $VTOY_PATH/tool/vblade_64
+    else
+        echo $VTOY_PATH/tool/vblade_32
+    fi
+}
+
+ventoy_find_bin_path() {
+    if $BUSYBOX_PATH/which "$1" > /dev/null; then
+        $BUSYBOX_PATH/which "$1"; return
+    fi
+    
+    for vt_path in '/bin' '/sbin' '/usr/bin' '/usr/sbin' '/usr/local/bin' '/usr/local/sbin' '/root/bin'; do
+        if [ -e "$vt_path/$1" ]; then
+            echo "$vt_path/$1"; return
+        fi
+    done
+    
+    echo ""
+}
+
+
+ventoy_find_bin_run() {    
+    vtsudo=0
+    if [ "$1" = "sudo" ]; then
+        shift
+        vtsudo=1
+    fi
+    
+    vtbinpath=$(ventoy_find_bin_path "$1")
+    if [ -n "$vtbinpath" ]; then
+        shift
+        
+        if [ $vtsudo -eq 0 ]; then
+            vtlog "$vtbinpath $*"
+            $vtbinpath $*
+        else
+            vtlog "sudo $vtbinpath $*"
+            sudo $vtbinpath $*
+        fi
+    fi
+}
+
+ventoy_get_module_postfix() {
+    vtKerVer=$($BUSYBOX_PATH/uname -r)
+    vtLine=$($FIND /lib/modules/$vtKerVer/ -name *.ko* | $HEAD -n1)
+    vtComp=${vtLine##*/*.ko}
+    echo "ko$vtComp"
+}
+
+ventoy_check_dm_module() {
+    if $GREP -q 'device-mapper' /proc/devices; then
+        $BUSYBOX_PATH/true; return
+    fi
+    
+    vtlog "device-mapper NOT found in /proc/devices, try to load kernel module"
+    $BUSYBOX_PATH/modprobe dm_mod >>$VTLOG 2>&1
+    $BUSYBOX_PATH/modprobe dm-mod >>$VTLOG 2>&1
+    
+    if ! $GREP -q 'device-mapper' /proc/devices; then
+        vtlog "modprobe failed, now try to insmod ko..."
+    
+        $FIND /lib/modules/ -name "dm-mod.ko*" | while read vtline; do
+            vtlog "insmode $vtline "
+            $BUSYBOX_PATH/insmod $vtline >>$VTLOG 2>&1
+        done
+    fi
+    
+    if $GREP -q 'device-mapper' /proc/devices; then
+        vtlog "device-mapper found in /proc/devices after retry"
+        $BUSYBOX_PATH/true; return
+    else
+        vtlog "device-mapper still NOT found in /proc/devices after retry"
+        $BUSYBOX_PATH/false; return
+    fi
+}
+
+create_ventoy_device_mapper() {
+    vtlog "create_ventoy_device_mapper $*"
+    
+    VT_DM_BIN=$(ventoy_find_bin_path dmsetup)
+    if [ -z "$VT_DM_BIN" ]; then
+        vtlog "no dmsetup avaliable, lastly try inbox dmsetup"
+        VT_DM_BIN=$VTOY_PATH/tool/dmsetup
+    fi
+    
+    vtlog "dmsetup avaliable in system $VT_DM_BIN"
+        
+    if ventoy_check_dm_module "$1"; then
+        vtlog "device-mapper module check success"
+    else
+        vterr "Error: no dm module avaliable"
+    fi
+    
+    $VTOY_PATH/tool/vtoydm -p -f $VTOY_PATH/ventoy_image_map -d $1 > $VTOY_PATH/ventoy_dm_table        
+    if [ -z "$2" ]; then
+        $VT_DM_BIN create ventoy $VTOY_PATH/ventoy_dm_table >>$VTLOG 2>&1
+    else
+        $VT_DM_BIN "$2" create ventoy $VTOY_PATH/ventoy_dm_table >>$VTLOG 2>&1
+    fi    
+}
+
+wait_for_ventoy_dm_disk_label() {
+    DM=$($BUSYBOX_PATH/readlink $VTOY_DM_PATH)    
+    vtlog "wait_for_ventoy_dm_disk_label $DM ..."
+    
+    for i in 0 1 2 3 4 5 6 7 8 9; do
+        vtlog "i=$i ####### ls /dev/disk/by-label/"
+        ls -l /dev/disk/by-label/ >> $VTLOG
+        
+        if ls -l /dev/disk/by-label/ | $GREP -q "$DM"; then
+            break
+        else
+            $SLEEP 0.3
+        fi
+    done
+}
+
+install_udeb_pkg() {
+    if ! [ -e "$1" ]; then
+        $BUSYBOX_PATH/false
+        return
+    fi
+    
+    if [ -d /tmp/vtoy_udeb ]; then
+        $BUSYBOX_PATH/rm -rf /tmp/vtoy_udeb
+    fi
+    
+    $BUSYBOX_PATH/mkdir -p /tmp/vtoy_udeb
+    $BUSYBOX_PATH/cp -a "$1" /tmp/vtoy_udeb/
+    
+    CURDIR=$($BUSYBOX_PATH/pwd)
+    cd /tmp/vtoy_udeb
+    
+    $BUSYBOX_PATH/ar x "$1"
+    
+    if [ -e 'data.tar.gz' ]; then
+        $BUSYBOX_PATH/tar -xzf data.tar.gz -C /
+    elif [ -e 'data.tar.xz' ]; then
+        $BUSYBOX_PATH/tar -xJf data.tar.xz -C /
+    elif [ -e 'data.tar.bz2' ]; then
+        $BUSYBOX_PATH/tar -xjf data.tar.bz2 -C /
+    elif [ -e 'data.tar.lzma' ]; then
+        $BUSYBOX_PATH/tar -xaf data.tar.lzma -C /
+    fi
+    
+    if [ -e 'control.tar.gz' ]; then
+        $BUSYBOX_PATH/tar -xzf control.tar.gz -C /
+    elif [ -e 'control.tar.xz' ]; then
+        $BUSYBOX_PATH/tar -xJf control.tar.xz -C /
+    elif [ -e 'control.tar.bz2' ]; then
+        $BUSYBOX_PATH/tar -xjf control.tar.bz2 -C /
+    elif [ -e 'control.tar.lzma' ]; then
+        $BUSYBOX_PATH/tar -xaf control.tar.lzma -C /
+    fi
+    
+    cd $CURDIR
+    $BUSYBOX_PATH/rm -rf /tmp/vtoy_udeb
+    $BUSYBOX_PATH/true
+}
+
+
+install_udeb_from_line() {
+    vtlog "install_udeb_from_line $1"
+
+    if ! [ -b "$2" ]; then
+        vterr "disk #$2# not exist"
+        return 
+    fi
+
+    sector=$(echo $1 | $AWK '{print $(NF-1)}')
+    length=$(echo $1 | $AWK '{print $NF}')
+    vtlog "sector=$sector  length=$length"
+    
+    $VTOY_PATH/tool/vtoydm -e -f $VTOY_PATH/ventoy_image_map -d ${2} -s $sector -l $length -o /tmp/xxx.udeb
+    if [ -e /tmp/xxx.udeb ]; then
+        vtlog "extract udeb file from iso success"
+    else
+        vterr "extract udeb file from iso fail"
+        return
+    fi
+    
+    install_udeb_pkg /tmp/xxx.udeb
+    $BUSYBOX_PATH/rm -f /tmp/xxx.udeb
+}
+
+extract_file_from_line() {
+    vtlog "extract_file_from_line $1 disk=#$2#"
+    if ! [ -b "$2" ]; then
+        vterr "disk #$2# not exist"
+        return 
+    fi
+
+    sector=$(echo $1 | $AWK '{print $(NF-1)}')
+    length=$(echo $1 | $AWK '{print $NF}')
+    vtlog "sector=$sector  length=$length"
+    
+    $VTOY_PATH/tool/vtoydm -e -f $VTOY_PATH/ventoy_image_map -d ${2} -s $sector -l $length -o $3
+    if [ -e $3 ]; then
+        vtlog "extract file from iso success"
+        $BUSYBOX_PATH/true
+    else
+        vterr "extract file from iso fail"
+        $BUSYBOX_PATH/false
+    fi
+}
+
+install_rpm_from_line() {
+    vtlog "install_rpm_from_line $1 disk=#$2#"
+
+    if ! [ -b "$2" ]; then
+        vterr "disk #$2# not exist"
+        return 
+    fi
+
+    sector=$(echo $1 | $AWK '{print $(NF-1)}')
+    length=$(echo $1 | $AWK '{print $NF}')
+    vtlog "sector=$sector  length=$length"
+    
+    $VTOY_PATH/tool/vtoydm -e -f $VTOY_PATH/ventoy_image_map -d ${2} -s $sector -l $length -o /tmp/xxx.rpm
+    if [ -e /tmp/xxx.rpm ]; then
+        vtlog "extract rpm file from iso success"
+    else
+        vterr "extract rpm file from iso fail"
+        return
+    fi
+    
+    CURPWD=$($BUSYBOX_PATH/pwd)
+    
+    cd /
+    vtlog "install rpm..."
+    $BUSYBOX_PATH/rpm2cpio /tmp/xxx.rpm | $BUSYBOX_PATH/cpio -idm 2>>$VTLOG
+    cd $CURPWD
+    
+    $BUSYBOX_PATH/rm -f /tmp/xxx.rpm
+}
+
+dump_whole_iso_file() {
+   $VTOY_PATH/tool/vtoydm -p -f $VTOY_PATH/ventoy_image_map -d $usb_disk | while read vtline; do
+        vtlog "dmtable line: $vtline"
+        vtcount=$(echo $vtline | $AWK '{print $2}')
+        vtoffset=$(echo $vtline | $AWK '{print $NF}')
+        $BUSYBOX_PATH/dd if=$usb_disk of="$1" bs=512 count=$vtcount skip=$vtoffset oflag=append conv=notrunc 
+    done 
+}
+
+ventoy_copy_device_mapper() {
+    if [ -L $VTOY_DM_PATH ]; then
+        vtlog "replace block device link $1..."
+        $BUSYBOX_PATH/mv "$1" $VTOY_PATH/dev_backup_${1#/dev/}
+        VT_MAPPER_LINK=$($BUSYBOX_PATH/readlink $VTOY_DM_PATH)
+        $BUSYBOX_PATH/cp -a "/dev/mapper/$VT_MAPPER_LINK" "$1"
+    elif [ -b $VTOY_DM_PATH ]; then
+        vtlog "replace block device $1..."
+        $BUSYBOX_PATH/mv "$1" $VTOY_PATH/dev_backup_${1#/dev/}            
+        $BUSYBOX_PATH/cp -a "$VTOY_DM_PATH" "$1"
+    else
+    
+        vtlog "$VTOY_DM_PATH not exist, now check /dev/dm-X ..."
+        VT_DM_BIN=$(ventoy_find_bin_path dmsetup)
+        if [ -z "$VT_DM_BIN" ]; then
+            vtlog "no dmsetup avaliable, lastly try inbox dmsetup"
+            VT_DM_BIN=$VTOY_PATH/tool/dmsetup
+        fi
+    
+        DM_VT_ID=$($VT_DM_BIN ls | $GREP ventoy | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
+        vtlog "DM_VT_ID=$DM_VT_ID ..."
+        $BUSYBOX_PATH/mv "$1" $VTOY_PATH/dev_backup_${1#/dev/}            
+        $BUSYBOX_PATH/mknod -m 0666 "$1" b $DM_VT_ID
+    fi 
+}
+
+ventoy_udev_disk_common_hook() {
+    
+    VTDISK="${1:0:-1}"
+    
+    # create device mapper for iso image file
+    if create_ventoy_device_mapper "/dev/$VTDISK" --readonly; then
+        vtlog "==== create ventoy device mapper success ===="
+    else
+        vtlog "==== create ventoy device mapper failed ===="
+        
+        $SLEEP 5
+        
+        if $GREP -q "/dev/$VTDISK" /proc/mounts; then
+            $GREP "/dev/$VTDISK" /proc/mounts | while read vtLine; do
+                vtPart=$(echo $vtLine | $AWK '{print $1}')
+                vtMnt=$(echo $vtLine | $AWK '{print $2}')
+                vtlog "$vtPart is mounted on $vtMnt  now umount it ..."
+                $BUSYBOX_PATH/umount $vtMnt
+            done
+        fi
+        
+        if create_ventoy_device_mapper "/dev/$VTDISK" --readonly; then
+            vtlog "==== create ventoy device mapper success after retry ===="
+        else
+            vtlog "==== create ventoy device mapper failed after retry ===="
+            return
+        fi
+    fi
+    
+    if [ "$2" = "noreplace" ]; then
+        vtlog "no need to replace block device"
+    else
+        ventoy_copy_device_mapper "/dev/$1"
+    fi
+}
+
+

IMG/cpio/ventoy/hook/ventoy-os-lib.sh

@@ -0,0 +1,98 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+VT_RULE_DIR_PREFIX=""
+VT_PRINTK_LEVEL=0
+VT_UDEV_RULE_FILE_NAME="99-ventoy.rules"
+VT_UDEV_RULE_PREFIX="ACTION==\"add\", SUBSYSTEM==\"block\","
+
+ventoy_close_printk() {
+    VT_PRINTK_LEVEL=$($CAT /proc/sys/kernel/printk | $AWK '{print $1}')
+    if [ -e /proc/sys/kernel/printk ]; then
+        echo 0 > /proc/sys/kernel/printk
+    fi
+}
+
+ventoy_restore_printk() {
+    if [ -e /proc/sys/kernel/printk ]; then
+        echo $VT_PRINTK_LEVEL > /proc/sys/kernel/printk
+    fi
+}
+
+ventoy_set_rule_dir_prefix() {
+    VT_RULE_DIR_PREFIX=$1
+}
+
+ventoy_get_udev_conf_dir() {
+    if [ -d $VT_RULE_DIR_PREFIX/etc/udev/rules.d ]; then
+        VT_RULE_PATH=$VT_RULE_DIR_PREFIX/etc/udev/rules.d
+    elif [ -d $VT_RULE_DIR_PREFIX/lib/udev/rules.d ]; then
+        VT_RULE_PATH=$VT_RULE_DIR_PREFIX/lib/udev/rules.d
+    else
+        $BUSYBOX_PATH/mkdir -p $VT_RULE_DIR_PREFIX/etc/udev/rules.d
+        VT_RULE_PATH=$VT_RULE_DIR_PREFIX/etc/udev/rules.d
+    fi
+    echo -n "$VT_RULE_PATH"
+}
+
+ventoy_get_udev_conf_path() {
+    VT_RULE_DIR=$(ventoy_get_udev_conf_dir)
+    echo "$VT_RULE_DIR/$VT_UDEV_RULE_FILE_NAME"
+}
+
+ventoy_add_kernel_udev_rule() {
+    VT_UDEV_RULE_PATH=$(ventoy_get_udev_conf_path)
+    echo "KERNEL==\"$1\", $VT_UDEV_RULE_PREFIX RUN+=\"$2\"" >> $VT_UDEV_RULE_PATH
+}
+
+ventoy_add_udev_rule_with_name() {
+    VT_UDEV_RULE_DIR=$(ventoy_get_udev_conf_dir)
+    echo "KERNEL==\"*2\", $VT_UDEV_RULE_PREFIX RUN+=\"$1\"" >> $VT_UDEV_RULE_DIR/$2
+}
+
+ventoy_add_udev_rule_with_path() {
+    echo "KERNEL==\"*2\", $VT_UDEV_RULE_PREFIX RUN+=\"$1\"" >> $2
+}
+
+ventoy_add_udev_rule() {
+    VT_UDEV_RULE_PATH=$(ventoy_get_udev_conf_path)
+    echo "KERNEL==\"*2\", $VT_UDEV_RULE_PREFIX RUN+=\"$1\"" >> $VT_UDEV_RULE_PATH
+}
+
+#
+# It seems there is a bug in somw version of systemd-udevd
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=869719
+#
+ventoy_systemd_udevd_work_around() {
+    VTSYSTEMUDEV="$VT_RULE_DIR_PREFIX/lib/systemd/system/systemd-udevd.service"
+    if [ -e $VTSYSTEMUDEV ]; then
+        if $GREP -q 'SystemCallArchitectures.*native' $VTSYSTEMUDEV; then
+            $SED "s/.*\(SystemCallArchitectures.*native\)/#\1/g"  -i $VTSYSTEMUDEV
+        fi
+    fi
+}
+
+ventoy_print_yum_repo() {
+    echo "[$1]"
+    echo "name=$1"
+    echo "baseurl=$2"
+    echo "enabled=1"
+    echo "gpgcheck=0"
+    echo "priority=0"
+}

IMG/cpio/ventoy/hook/xen/udev_disk_hook.sh

@@ -0,0 +1,32 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+if is_ventoy_hook_finished || not_ventoy_disk "${1:0:-1}"; then
+    exit 0
+fi
+
+ventoy_udev_disk_common_hook $*
+
+# trick for xen6
+ventoy_copy_device_mapper /dev/sr7
+
+# OK finish
+set_ventoy_hook_finish

IMG/cpio/ventoy/hook/xen/ventoy-hook.sh

@@ -0,0 +1,24 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. $VTOY_PATH/hook/ventoy-os-lib.sh
+
+ventoy_systemd_udevd_work_around
+
+ventoy_add_udev_rule "$VTOY_PATH/hook/xen/udev_disk_hook.sh %k"

IMG/cpio/ventoy/init

@@ -0,0 +1,154 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+
+###################################################################
+#                                                                  #
+# Step 1 : parse kernel debug parameter                            #
+#                                                                  #
+####################################################################
+mkdir /proc; mount -t proc proc /proc
+vtcmdline=$(cat /proc/cmdline)
+vtkerver=$(cat /proc/version)
+umount /proc; rm -rf /proc
+
+echo "kenel version=$vtkerver" >>$VTLOG
+echo "kenel cmdline=$vtcmdline" >>$VTLOG
+
+#break here for debug
+if [ "$VTOY_BREAK_LEVEL" = "01" ] || [ "$VTOY_BREAK_LEVEL" = "11" ]; then
+    sleep 5
+    echo -e "\n\n\033[32m ################################################# \033[0m"
+    echo -e "\033[32m ################ VENTOY DEBUG ################### \033[0m"
+    echo -e "\033[32m ################################################# \033[0m \n"
+    
+    if [ "$VTOY_BREAK_LEVEL" = "11" ]; then
+        cat $VTLOG
+    fi
+    exec $BUSYBOX_PATH/sh
+fi
+
+
+####################################################################
+#                                                                  #
+# Step 2 : extract real initramfs to /                             #
+#                                                                  #
+####################################################################
+cd /
+rm -rf /init /linuxrc /sbin /dev/  /root
+
+ventoy_is_initrd_ramdisk() {
+    #As I known, PCLinuxOS use ramdisk
+    if echo $vtkerver | grep -i -q 'PCLinuxOS'; then
+        true
+    else
+        false
+    fi
+}
+
+# param: file skip magic tmp
+ventoy_unpack_initramfs() {        
+    vtfile=$1; vtskip=$2; vtmagic=$3; vttmp=$4    
+    echo "=====ventoy_unpack_initramfs: #$*#" >> $VTLOG
+    
+    for vtx in '1F8B zcat' '1F9E zcat' '425A bzcat' '5D00 lzcat' 'FD37 xzcat' '894C lzopcat' '0221 lz4cat' '28B5 zstdcat' '3037 cat'; do
+        if [ "${vtx:0:4}" = "${vtmagic:0:4}" ]; then
+            echo "vtx=$vtx" >> $VTLOG            
+            if [ $vtskip -eq 0 ]; then
+                ${vtx:5} $vtfile | (cpio -idm 2>>$VTLOG; cat > $vttmp)
+            else
+                dd if=$vtfile skip=$vtskip iflag=skip_bytes status=none | ${vtx:5} | (cpio -idm 2>>$VTLOG; cat > $vttmp)
+            fi
+            break
+        fi
+    done
+}
+
+# param: file magic tmp
+ventoy_unpack_initrd() {        
+    vtfile=$1; vtmagic=$2; vttmp=$3    
+    echo "=====ventoy_unpack_initrd: #$*#" >> $VTLOG
+    
+    for vtx in '1F8B zcat' '1F9E zcat' '425A bzcat' '5D00 lzcat' 'FD37 xzcat' '894C lzopcat' '0221 lz4cat' '28B5 zstdcat' '3037 cat'; do
+        if [ "${vtx:0:4}" = "${vtmagic:0:4}" ]; then
+            echo "vtx=$vtx" >> $VTLOG            
+            ${vtx:5} $vtfile > $vttmp
+            break
+        fi
+    done    
+}
+
+
+# This export is for busybox cpio command
+export EXTRACT_UNSAFE_SYMLINKS=1
+
+for vtfile in $(ls /initrd*); do    
+    #decompress first initrd
+    vtmagic=$(hexdump -n 2 -e '2/1 "%02X"' $vtfile)
+
+    if ventoy_is_initrd_ramdisk; then
+        ventoy_unpack_initrd $vtfile $vtmagic ${vtfile}_tmp
+        mv ${vtfile}_tmp $vtfile
+        break
+    else
+        ventoy_unpack_initramfs $vtfile 0 $vtmagic ${vtfile}_tmp
+    fi
+
+    #only for cpio,cpio,...,initrd sequence, initrd,cpio or initrd,initrd sequence is not supported
+    while [ -e ${vtfile}_tmp ] && [ $(stat -c '%s' ${vtfile}_tmp) -gt 512 ]; do
+        mv ${vtfile}_tmp $vtfile
+        vtdump=$(hexdump -n 512 -e '512/1 "%02X"' $vtfile)
+        vtmagic=$(echo $vtdump | sed 's/^\(00\)*//')
+        let vtoffset="(${#vtdump}-${#vtmagic})/2"
+        
+        if [ -z "$vtmagic" ]; then
+            echo "terminate with all zero data file" >> $VTLOG
+            break
+        fi
+        
+        ventoy_unpack_initramfs $vtfile $vtoffset ${vtmagic:0:4} ${vtfile}_tmp
+    done
+    
+    rm -f $vtfile ${vtfile}_tmp
+done
+
+
+#break here for debug
+if [ "$VTOY_BREAK_LEVEL" = "02" ] || [ "$VTOY_BREAK_LEVEL" = "12" ]; then
+    sleep 5
+    echo -e "\n\n\033[32m ################################################# \033[0m"
+    echo -e "\033[32m ################ VENTOY DEBUG ################### \033[0m"
+    echo -e "\033[32m ################################################# \033[0m \n"   
+    if [ "$VTOY_BREAK_LEVEL" = "12" ]; then 
+        cat $VTOY_PATH/log
+    fi    
+    exec $BUSYBOX_PATH/sh
+fi
+
+
+####################################################################
+#                                                                  #
+# Step 3 : Hand over to ventoy.sh                                  #
+#                                                                  #
+####################################################################
+echo "Now hand over to ventoy.sh" >>$VTLOG
+. $VTOY_PATH/tool/vtoytool_install.sh
+
+export PATH=$VTOY_ORG_PATH
+exec $BUSYBOX_PATH/sh $VTOY_PATH/ventoy.sh

IMG/cpio/ventoy/tool/ventoy_loader.sh

@@ -0,0 +1,20 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+exec /ventoy/busybox/sh

IMG/cpio/ventoy/tool/vtoytool_install.sh

@@ -0,0 +1,54 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+echo "#### install vtoytool #####" >> $VTLOG
+
+if ! [ -e $BUSYBOX_PATH/ar ]; then
+    $BUSYBOX_PATH/ln -s $VTOY_PATH/tool/ar $BUSYBOX_PATH/ar
+fi
+
+for vtdir in $(ls $VTOY_PATH/tool/vtoytool/); do
+    echo "try $VTOY_PATH/tool/vtoytool/$vtdir/ ..." >> $VTLOG
+    if $VTOY_PATH/tool/vtoytool/$vtdir/vtoytool_64 --install 2>>$VTLOG; then
+        echo "vtoytool_64 OK" >> $VTLOG
+        break
+    fi
+    
+    if $VTOY_PATH/tool/vtoytool/$vtdir/vtoytool_32 --install 2>>$VTLOG; then
+        echo "vtoytool_32 OK" >> $VTLOG
+        break
+    fi
+done
+
+if $VTOY_PATH/tool/vtoy_fuse_iso_64 -t 2>>$VTLOG; then
+    echo "use vtoy_fuse_iso_64" >>$VTLOG
+    $BUSYBOX_PATH/cp -a $VTOY_PATH/tool/vtoy_fuse_iso_64  $VTOY_PATH/tool/vtoy_fuse_iso
+else
+    echo "use vtoy_fuse_iso_32" >>$VTLOG    
+    $BUSYBOX_PATH/cp -a $VTOY_PATH/tool/vtoy_fuse_iso_32 $VTOY_PATH/tool/vtoy_fuse_iso
+fi
+
+if $VTOY_PATH/tool/unsquashfs_64 -t 2>>$VTLOG; then
+    echo "use unsquashfs_64" >>$VTLOG
+    $BUSYBOX_PATH/cp -a $VTOY_PATH/tool/unsquashfs_64  $VTOY_PATH/tool/vtoy_unsquashfs
+else
+    echo "use unsquashfs_32" >>$VTLOG    
+    $BUSYBOX_PATH/cp -a $VTOY_PATH/tool/unsquashfs_32 $VTOY_PATH/tool/vtoy_unsquashfs
+fi
+

IMG/cpio/ventoy/ventoy.sh

@@ -0,0 +1,203 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+####################################################################
+#                                                                  #
+# Step 1 : Parse kernel parameter                                  #
+#                                                                  #
+####################################################################
+if ! [ -e /proc ]; then
+    $BUSYBOX_PATH/mkdir /proc
+    rmproc='Y'
+fi
+$BUSYBOX_PATH/mount -t proc proc /proc
+
+# vtinit=xxx to replace rdinit=xxx
+vtcmdline=$($CAT /proc/cmdline)
+for i in $vtcmdline; do
+    if echo $i | $GREP -q vtinit; then
+        user_rdinit=${i#vtinit=}
+        echo "user set user_rdinit=${user_rdinit}" >>$VTLOG
+    fi
+done
+
+
+####################################################################
+#                                                                  #
+# Step 2 : Do OS specific hook                                     #
+#                                                                  #
+####################################################################
+ventoy_get_os_type() {
+    echo "kernel version" >> $VTLOG
+    $CAT /proc/version >> $VTLOG
+
+    # rhel5/CentOS5 and all other distributions based on them
+    if $GREP -q 'el5' /proc/version; then
+        echo 'rhel5'; return
+
+    # rhel6/CentOS6 and all other distributions based on them
+    elif $GREP -q 'el6' /proc/version; then
+        echo 'rhel6'; return
+
+    # rhel7/CentOS7/rhel8/CentOS8 and all other distributions based on them
+    elif $GREP -q 'el[78]' /proc/version; then
+        echo 'rhel7'; return   
+
+    # Maybe rhel9 rhel1x use the same way? Who knows!
+    elif $EGREP -q 'el9|el1[0-9]' /proc/version; then
+        echo 'rhel7'; return   
+        
+    # Fedora : do the same process with rhel7
+    elif $GREP -q '\.fc[0-9][0-9]\.' /proc/version; then
+        echo 'rhel7'; return
+        
+    # Debian :
+    elif $GREP -q '[Dd]ebian' /proc/version; then
+        echo 'debian'; return
+        
+    # Ubuntu : do the same process with debian
+    elif $GREP -q '[Uu]buntu' /proc/version; then
+        echo 'debian'; return
+        
+    # Deepin : do the same process with debian
+    elif $GREP -q '[Dd]eepin' /proc/version; then
+        echo 'debian'; return
+        
+    # SUSE
+    elif $GREP -q 'SUSE' /proc/version; then
+        echo 'suse'; return
+        
+    # ArchLinux
+    elif $EGREP -q 'archlinux|ARCH' /proc/version; then
+        echo 'arch'; return
+    
+    # gentoo
+    elif $EGREP -q '[Gg]entoo' /proc/version; then
+        echo 'gentoo'; return
+        
+    # TinyCore
+    elif $EGREP -q 'tinycore' /proc/version; then
+        echo 'tinycore'; return
+    
+    # manjaro
+    elif $EGREP -q 'manjaro|MANJARO' /proc/version; then
+        echo 'manjaro'; return
+        
+    # mageia
+    elif $EGREP -q 'mageia' /proc/version; then
+        echo 'mageia'; return
+    
+    # pclinux OS
+    elif $GREP -i -q 'PCLinuxOS' /proc/version; then
+        echo 'pclos'; return
+    
+    # KaOS
+    elif $GREP -i -q 'kaos' /proc/version; then
+        echo 'kaos'; return
+    
+    # Alpine
+    elif $GREP -q 'Alpine' /proc/version; then
+        echo 'alpine'; return
+
+    # NixOS
+    elif $GREP -i -q 'NixOS' /proc/version; then
+        echo 'nixos'; return
+    
+    fi
+
+    if [ -e /lib/debian-installer ]; then
+        echo 'debian'; return
+    fi
+
+    if [ -e /etc/os-release ]; then
+        if $GREP -q 'XenServer' /etc/os-release; then
+            echo 'xen'; return
+        elif $GREP -q 'SUSE ' /etc/os-release; then
+            echo 'suse'; return
+        fi
+    fi
+    
+    if $BUSYBOX_PATH/dmesg | $GREP -q -m1 "Xen:"; then
+        echo 'xen'; return
+    fi
+    
+    
+    if [ -e /etc/HOSTNAME ] && $GREP -i -q 'slackware' /etc/HOSTNAME; then
+        echo 'slackware'; return
+    fi
+    
+    
+    echo "default"
+}
+
+VTOS=$(ventoy_get_os_type)
+echo "OS=###${VTOS}###" >>$VTLOG
+if [ -e "$VTOY_PATH/hook/$VTOS/ventoy-hook.sh" ]; then
+    $BUSYBOX_PATH/sh "$VTOY_PATH/hook/$VTOS/ventoy-hook.sh"
+fi
+
+
+####################################################################
+#                                                                  #
+# Step 3 : Check for debug break                                   #
+#                                                                  #
+####################################################################
+if [ "$VTOY_BREAK_LEVEL" = "03" ] || [ "$VTOY_BREAK_LEVEL" = "13" ]; then
+    $SLEEP 5
+    echo -e "\n\n\033[32m ################################################# \033[0m"
+    echo -e "\033[32m ################ VENTOY DEBUG ################### \033[0m"
+    echo -e "\033[32m ################################################# \033[0m \n"
+    if [ "$VTOY_BREAK_LEVEL" = "13" ]; then 
+        $CAT $VTOY_PATH/log
+    fi
+    exec $BUSYBOX_PATH/sh
+fi
+
+
+
+####################################################################
+#                                                                  #
+# Step 4 : Hand over to real init                                  #
+#                                                                  #
+####################################################################
+$BUSYBOX_PATH/umount /proc
+if [ "$rmproc" = "Y" ]; then
+    $BUSYBOX_PATH/rm -rf /proc
+fi
+
+cd /
+unset VTOY_PATH VTLOG FIND GREP EGREP CAT AWK SED SLEEP HEAD
+
+for vtinit in $user_rdinit /init /sbin/init /linuxrc; do
+    if [ -d /ventoy_rdroot ]; then
+        if [ -e "/ventoy_rdroot$vtinit" ]; then
+            # switch_root will check /init file, this is a cheat code
+            echo 'switch_root' > /init
+            exec $BUSYBOX_PATH/switch_root /ventoy_rdroot "$vtinit"
+        fi
+    else
+        if [ -e "$vtinit" ];then
+            exec "$vtinit"
+        fi
+    fi
+done
+
+# Should never reach here
+echo -e "\n\n\033[31m ############ INIT NOT FOUND ############### \033[0m \n"
+exec $BUSYBOX_PATH/sh