diff --git a/IMG/cpio/ventoy/hook/rhel7/ventoy-hook.sh b/IMG/cpio/ventoy/hook/rhel7/ventoy-hook.sh
index d1cbdac1..7b43a79f 100644
--- a/IMG/cpio/ventoy/hook/rhel7/ventoy-hook.sh
+++ b/IMG/cpio/ventoy/hook/rhel7/ventoy-hook.sh
@@ -159,7 +159,7 @@ if $GREP -q SCRE /proc/cmdline; then
 fi
 
 if $GREP -qw 'SA[.]1' /proc/cmdline; then
-if $GREP -qw 'SA[.]2' /proc/cmdline; then
+if $GREP -qw 'writable.fsimg' /proc/cmdline; then
 if $GREP -qw 'rw'     /proc/cmdline; then
     echo 1 > $VTOY_PATH/distmagic/DELL_PER
 fi
diff --git a/INSTALL/grub/grub.cfg b/INSTALL/grub/grub.cfg
index fe130668..c198879d 100644
--- a/INSTALL/grub/grub.cfg
+++ b/INSTALL/grub/grub.cfg
@@ -860,6 +860,9 @@ function uefi_linux_menu_func {
             if [ -f (loop)/boot/isolinux/syslnx64.cfg ]; then
                 syslinux_configfile (loop)/boot/isolinux/syslnx64.cfg
                 set vtback_cfg_find=1
+            elif [ -f (loop)/boot/syslinux/porteus.cfg ]; then
+                syslinux_configfile (loop)/boot/syslinux/porteus.cfg
+                set vtback_cfg_find=1
             fi
         fi
 
@@ -1311,6 +1314,9 @@ function legacy_linux_menu_func {
                 if [ -f (loop)/boot/isolinux/syslnx64.cfg ]; then
                     syslinux_configfile (loop)/boot/isolinux/syslnx64.cfg
                     set vtback_cfg_find=1
+                elif [ -f (loop)/boot/syslinux/porteus.cfg ]; then
+                    syslinux_configfile (loop)/boot/syslinux/porteus.cfg
+                    set vtback_cfg_find=1
                 fi
             fi
 
@@ -1486,6 +1492,8 @@ function iso_common_menuentry {
     
     get_os_type (loop)
     
+    ventoy_debug_pause
+    
     if vt_need_secondary_menu "$vt_chosen_name"; then
         vt_show_secondary_menu "$vt_chosen_path" "$vtoy_os" $vt_chosen_size
         if [ "$VTOY_SECOND_EXIT" = "1" ]; then
diff --git a/INSTALL/ventoy/vtoyjump32.exe b/INSTALL/ventoy/vtoyjump32.exe
index 15f3fc17..ae791443 100644
Binary files a/INSTALL/ventoy/vtoyjump32.exe and b/INSTALL/ventoy/vtoyjump32.exe differ
diff --git a/INSTALL/ventoy/vtoyjump64.exe b/INSTALL/ventoy/vtoyjump64.exe
index d1e63c6f..af643e43 100644
Binary files a/INSTALL/ventoy/vtoyjump64.exe and b/INSTALL/ventoy/vtoyjump64.exe differ
diff --git a/vtoyjump/vtoyjump/vtoyjump.c b/vtoyjump/vtoyjump/vtoyjump.c
index 178e4354..2d9a8a6a 100644
--- a/vtoyjump/vtoyjump/vtoyjump.c
+++ b/vtoyjump/vtoyjump/vtoyjump.c
@@ -916,7 +916,7 @@ static BOOL Is2K10PE(void)
     return bRet;
 }
 
-static CHAR GetIMDiskMountLogicalDrive(void)
+static CHAR GetIMDiskMountLogicalDrive(const char *suffix)
 {
     CHAR Letter = 'Y';
     DWORD Drives;
@@ -929,6 +929,12 @@ static CHAR GetIMDiskMountLogicalDrive(void)
         return 'M';
     }
 
+    //fixed use Z as mountpoint for Lenovo Product Recovery
+    if (strcmp(suffix, "VTLRI") == 0)
+    {
+        return 'Z';
+    }
+
     Drives = GetLogicalDrives();
     Log("Drives=0x%x", Drives);
     
@@ -1073,26 +1079,18 @@ End:
     return rc;
 }
 
-static int VentoyRunImdisk(const char *IsoPath, const char *imdiskexe, const char *opt)
+static int VentoyRunImdisk(const char *suffix, const char *IsoPath, const char *imdiskexe, const char *opt)
 {
     CHAR Letter;
     CHAR Cmdline[512];
     WCHAR CmdlineW[512];
     PROCESS_INFORMATION Pi;
 
-    Log("VentoyRunImdisk <%s> <%s> <%s>", IsoPath, imdiskexe, opt);
+    Log("VentoyRunImdisk <%s> <%s> <%s> <%s>", suffix, IsoPath, imdiskexe, opt);
 
-    Letter = GetIMDiskMountLogicalDrive();
+    Letter = GetIMDiskMountLogicalDrive(suffix);
 
-    if (opt)
-    {
-        sprintf_s(Cmdline, sizeof(Cmdline), "%s -a -o %s -f \"%s\" -m %C:", imdiskexe, opt, IsoPath, Letter);
-    }
-    else
-    {
-        sprintf_s(Cmdline, sizeof(Cmdline), "%s -a -f \"%s\" -m %C:", imdiskexe, IsoPath, Letter);
-    }
-    
+    sprintf_s(Cmdline, sizeof(Cmdline), "%s -a -o %s -f \"%s\" -m %C:", imdiskexe, opt, IsoPath, Letter);    
     Log("mount iso to %C: use imdisk cmd <%s>", Letter, Cmdline);
 
     if (IsUTF8Encode(IsoPath))
@@ -1135,7 +1133,7 @@ int VentoyMountISOByImdisk(const char *IsoPath, DWORD PhyDrive)
 
     if (0 == VentoyCopyImdisk(PhyDrive, ImPath))
     {
-        VentoyRunImdisk(IsoPath, ImPath, "ro");
+        VentoyRunImdisk("iso", IsoPath, ImPath, "ro");
         rc = 0;
     }
 
@@ -2370,7 +2368,7 @@ static int MountVTLRI(CHAR *ImgPath, DWORD PhyDrive)
 
     VentoyCopyImdisk(PhyDrive, ImDiskPath);
 
-    VentoyRunImdisk(ImgPath, ImDiskPath, "rem");
+    VentoyRunImdisk("VTLRI", ImgPath, ImDiskPath, "ro,rem");
 
     return 0;
 }