From e7cf29fd9d0afb0562ce467dc3a7f95c6cf42e5b Mon Sep 17 00:00:00 2001
From: longpanda <admin@ventoy.net>
Date: Sun, 1 Feb 2026 13:54:16 +0800
Subject: [PATCH] Add create_ventoy_iso_part_dm.sh (#3497)

---
 INSTALL/tool/create_ventoy_iso_part_dm.sh | 38 +++++++++++++++++++++++
 INSTALL/ventoy_pack.sh                    |  1 +
 2 files changed, 39 insertions(+)
 create mode 100644 INSTALL/tool/create_ventoy_iso_part_dm.sh

diff --git a/INSTALL/tool/create_ventoy_iso_part_dm.sh b/INSTALL/tool/create_ventoy_iso_part_dm.sh
new file mode 100644
index 00000000..a7ad6ed0
--- /dev/null
+++ b/INSTALL/tool/create_ventoy_iso_part_dm.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+
+if [ "$(id -u)" -ne 0 ]; then    
+    echo "Please run with sudo ..."
+    exit 1
+fi
+
+oldpwd=$(pwd)
+VPART=""
+
+if dmsetup -h > /dev/null 2>&1; then
+    VPART_MAJOR_MINOR=$(dmsetup table ventoy | head -n 1 | awk '{print $4}')    
+    cd /sys/class/block/
+    for t in *; do
+        if grep -q "^${VPART_MAJOR_MINOR}$" $t/dev; then
+            VPART=$t
+            echo 0 $(cat /sys/class/block/$VPART/size) linear /dev/$VPART 0 | dmsetup create $VPART
+            dmsetup mknodes "$VPART" > /dev/null 2>&1
+            break
+        fi
+    done
+    cd $oldpwd
+    
+    if [ -z "$VPART" ]; then
+        echo "$VPART_MAJOR_MINOR not found"
+        dmsetup ls; dmsetup info ventoy; dmsetup table ventoy
+        exit 1
+    else                                 
+        if [ ! -b "/dev/mapper/$VPART" ]; then
+            udevadm trigger --type=devices --action=add  > /dev/null 2>&1
+            udevadm settle > /dev/null 2>&1
+        fi
+        echo "Create /dev/mapper/$VPART success"
+    fi    
+else
+    echo "dmsetup program not avaliable"
+    exit 1
+fi
diff --git a/INSTALL/ventoy_pack.sh b/INSTALL/ventoy_pack.sh
index e03e8b02..3ab99b86 100644
--- a/INSTALL/ventoy_pack.sh
+++ b/INSTALL/ventoy_pack.sh
@@ -126,6 +126,7 @@ mkdir -p $tmpmnt/tool
 dd status=none bs=1024 count=16  if=./tool/i386/vtoycli    of=$tmpmnt/tool/mount.exfat-fuse_i386
 dd status=none bs=1024 count=16  if=./tool/x86_64/vtoycli  of=$tmpmnt/tool/mount.exfat-fuse_x86_64
 dd status=none bs=1024 count=16  if=./tool/aarch64/vtoycli of=$tmpmnt/tool/mount.exfat-fuse_aarch64
+cp -a ./tool/create_ventoy_iso_part_dm.sh  $tmpmnt/tool/
 
 
 rm -f $tmpmnt/grub/i386-pc/*.img