diff --git a/IMG/cpio/ventoy/hook/debian/ventoy-hook.sh b/IMG/cpio/ventoy/hook/debian/ventoy-hook.sh
index d940e0d3..7a02d33a 100644
--- a/IMG/cpio/ventoy/hook/debian/ventoy-hook.sh
+++ b/IMG/cpio/ventoy/hook/debian/ventoy-hook.sh
@@ -58,6 +58,9 @@ ventoy_get_debian_distro() {
         if $GREP -q 'Tails' /etc/os-release; then
             echo 'tails'; return
         fi
+        if $GREP -q 'NAME="Kylin"' /etc/os-release; then
+            echo 'kylin'; return
+        fi
     fi
 
     if $GREP -q 'slax/' /proc/cmdline; then
diff --git a/IMG/cpio/ventoy/hook/ventoy-hook-lib.sh b/IMG/cpio/ventoy/hook/ventoy-hook-lib.sh
index 7dad4b42..c0a5737a 100644
--- a/IMG/cpio/ventoy/hook/ventoy-hook-lib.sh
+++ b/IMG/cpio/ventoy/hook/ventoy-hook-lib.sh
@@ -67,8 +67,11 @@ set_ventoy_hook_finish() {
 
     if [ -f /ventoy/ventoy_iso_part_dm_cmd ]; then
         echo "### create iso part raw dm" >> $VTLOG
-        $BUSYBOX_PATH/sh /ventoy/ventoy_iso_part_dm_cmd >>$VTLOG 2>&1
-        $BUSYBOX_PATH/rm -f /ventoy/ventoy_iso_part_dm_cmd
+        $CAT $VTOY_PATH/ventoy_raw_table >> $VTLOG
+        echo "### iso part dm cmd" >> $VTLOG
+        $CAT /ventoy/ventoy_iso_part_dm_cmd >> $VTLOG        
+        $BUSYBOX_PATH/sh /ventoy/ventoy_iso_part_dm_cmd >>$VTLOG 2>&1        
+        #$BUSYBOX_PATH/rm -f /ventoy/ventoy_iso_part_dm_cmd
     fi
 }
 
@@ -159,16 +162,15 @@ ventoy_get_vblade_bin() {
     fi
 }
 
-ventoy_find_bin_path() {
-    if $BUSYBOX_PATH/which "$1" > /dev/null; then
-        $BUSYBOX_PATH/which "$1"; return
-    fi
-    
+ventoy_find_bin_path() {        
     for vt_path in '/bin' '/sbin' '/usr/bin' '/usr/sbin' '/usr/local/bin' '/usr/local/sbin' '/root/bin'; do
         if [ -e "$vt_path/$1" ]; then
             echo "$vt_path/$1"; return
         fi
     done
+    if $BUSYBOX_PATH/which "$1" > /dev/null; then
+        $BUSYBOX_PATH/which "$1"; return
+    fi
     
     echo ""
 }
@@ -266,7 +268,9 @@ create_ventoy_device_mapper() {
     fi
     
     RAWDISKNAME=$($HEAD -n1 $VTOY_PATH/ventoy_raw_table | $AWK '{print $4}')    
-    echo "$VT_DM_BIN create ${RAWDISKNAME#/dev/}  $VTOY_PATH/ventoy_raw_table" > /ventoy/ventoy_iso_part_dm_cmd    
+    echo "$VT_DM_BIN create  ${RAWDISKNAME#/dev/}  $VTOY_PATH/ventoy_raw_table"  > /ventoy/ventoy_iso_part_dm_cmd    
+    echo "$VT_DM_BIN mknodes ${RAWDISKNAME#/dev/}"                              >> /ventoy/ventoy_iso_part_dm_cmd    
+    echo "$VT_DM_BIN ls"                                                        >> /ventoy/ventoy_iso_part_dm_cmd    
 }
 
 create_persistent_device_mapper() {
diff --git a/IMG/cpio/ventoy/ventoy_chain.sh b/IMG/cpio/ventoy/ventoy_chain.sh
index bd1a0124..e57d73f3 100644
--- a/IMG/cpio/ventoy/ventoy_chain.sh
+++ b/IMG/cpio/ventoy/ventoy_chain.sh
@@ -179,6 +179,8 @@ ventoy_get_os_type() {
             echo 'deepin'; return
         elif $GREP -qi 'aerynos' /etc/os-release; then
             echo 'rhel7'; return
+        elif $GREP -qi 'ID_LIKE=debian' /etc/os-release; then
+            echo 'debian'; return
         fi
     fi
     
diff --git a/INSTALL/README b/INSTALL/README
index 989e10ad..fc86d907 100644
--- a/INSTALL/README
+++ b/INSTALL/README
@@ -11,7 +11,8 @@ Ventoy2Disk.sh CMD [ OPTION ] /dev/sdX
     
   OPTION: (optional)
    -r SIZE_MB  preserve some space at the bottom of the disk (only for install)
-   -s          enable secure boot support (default is disabled)
+   -s          enable  secure boot support (default is enabled)
+   -S          disable secure boot support (default is enabled)
    -g          use GPT partition style, default is MBR style (only for install)
 
 Please refer https://www.ventoy.net/en/doc_start.html for details.