diff --git a/IMG/cpio/ventoy/hook/debian/udev_disk_hook.sh b/IMG/cpio/ventoy/hook/debian/udev_disk_hook.sh
index 6dd6882b..d2afcc82 100644
--- a/IMG/cpio/ventoy/hook/debian/udev_disk_hook.sh
+++ b/IMG/cpio/ventoy/hook/debian/udev_disk_hook.sh
@@ -99,7 +99,18 @@ ventoy_udev_disk_common_hook $*
 # 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 | $GREP -q -i usb; then
+VT_BUS_USB=""
+if [ -n "$ID_BUS" ]; then
+    if echo $ID_BUS | $GREP -q -i usb; then
+        VT_BUS_USB="YES"
+    fi
+else
+    if $BUSYBOX_PATH/ls -l /sys/class/block/${1:0:-1} | $GREP -q -i usb; then
+        VT_BUS_USB="YES"
+    fi
+fi
+
+if [ -n "$VT_BUS_USB" ]; then
     vtlog "$1 is USB device"
 else
     vtlog "$1 is NOT USB device (bus $ID_BUS)"
diff --git a/INSTALL/grub/grub.cfg b/INSTALL/grub/grub.cfg
index 144b78e1..52e8a6b7 100644
--- a/INSTALL/grub/grub.cfg
+++ b/INSTALL/grub/grub.cfg
@@ -650,15 +650,14 @@ else
     set gfxmode=1920x1080,1366x768,1024x768
 fi
 
-if [ -n "$vtoy_theme" ]; then
-    set theme=$vtoy_theme
-else
-    set theme=$prefix/themes/ventoy/theme.txt
-fi
-
 if [ "$vtoy_display_mode" = "CLI" ]; then
     terminal_output  console
-else
+else    
+    if [ -n "$vtoy_theme" ]; then
+        set theme=$vtoy_theme
+    else
+        set theme=$prefix/themes/ventoy/theme.txt
+    fi
     terminal_output  gfxterm
 fi
 
diff --git a/Ventoy2Disk/Ventoy2Disk/Utility.c b/Ventoy2Disk/Ventoy2Disk/Utility.c
index dc8491db..586d2368 100644
--- a/Ventoy2Disk/Ventoy2Disk/Utility.c
+++ b/Ventoy2Disk/Ventoy2Disk/Utility.c
@@ -549,6 +549,7 @@ int VentoyFillGpt(UINT64 DiskSizeBytes, VTOY_GPT_INFO *pInfo)
     VTOY_GPT_PART_TBL *Table = pInfo->PartTbl;
     static GUID WindowsDataPartType = { 0xebd0a0a2, 0xb9e5, 0x4433, { 0x87, 0xc0, 0x68, 0xb6, 0xb7, 0x26, 0x99, 0xc7 } };
     static GUID EspPartType = { 0xc12a7328, 0xf81f, 0x11d2, { 0xba, 0x4b, 0x00, 0xa0, 0xc9, 0x3e, 0xc9, 0x3b } };
+	//static GUID BiosGrubPartType = { 0x21686148, 0x6449, 0x6e6f, { 0x74, 0x4e, 0x65, 0x65, 0x64, 0x45, 0x46, 0x49 } };
 
     VentoyFillProtectMBR(DiskSizeBytes, &pInfo->MBR);
 
@@ -588,6 +589,14 @@ int VentoyFillGpt(UINT64 DiskSizeBytes, VTOY_GPT_INFO *pInfo)
     Table[1].Attr = 1;
     memcpy(Table[1].Name, L"VTOYEFI", 7 * 2);
 
+#if 0
+	memcpy(&(Table[2].PartType), &BiosGrubPartType, sizeof(GUID));
+	CoCreateGuid(&(Table[2].PartGuid));
+	Table[2].StartLBA = 34;
+	Table[2].LastLBA = 2047;
+	Table[2].Attr = 0;
+#endif
+
     //Update CRC
     Head->PartTblCrc = VentoyCrc32(Table, sizeof(pInfo->PartTbl));
     Head->Crc = VentoyCrc32(Head, Head->Length);
diff --git a/Ventoy2Disk/Ventoy2Disk/Ventoy2Disk.c b/Ventoy2Disk/Ventoy2Disk/Ventoy2Disk.c
index e6cb741c..2dc33f18 100644
--- a/Ventoy2Disk/Ventoy2Disk/Ventoy2Disk.c
+++ b/Ventoy2Disk/Ventoy2Disk/Ventoy2Disk.c
@@ -107,6 +107,21 @@ static BOOL IsVentoyPhyDrive(int PhyDrive, UINT64 SizeBytes, MBR_HEAD *pMBR, UIN
         return FALSE;
     }
 
+	for (i = 0; i < 4; i++)
+	{
+		Log("=========== Partition Table %d ============", i + 1);
+		Log("PartTbl.Active = 0x%x", MBR.PartTbl[i].Active);
+		Log("PartTbl.FsFlag = 0x%x", MBR.PartTbl[i].FsFlag);
+		Log("PartTbl.StartSectorId = %u", MBR.PartTbl[i].StartSectorId);
+		Log("PartTbl.SectorCount = %u", MBR.PartTbl[i].SectorCount);
+		Log("PartTbl.StartHead = %u", MBR.PartTbl[i].StartHead);
+		Log("PartTbl.StartSector = %u", MBR.PartTbl[i].StartSector);
+		Log("PartTbl.StartCylinder = %u", MBR.PartTbl[i].StartCylinder);
+		Log("PartTbl.EndHead = %u", MBR.PartTbl[i].EndHead);
+		Log("PartTbl.EndSector = %u", MBR.PartTbl[i].EndSector);
+		Log("PartTbl.EndCylinder = %u", MBR.PartTbl[i].EndCylinder);
+	}
+
 	if (MBR.PartTbl[0].FsFlag == 0xEE)
 	{
 		pGpt = malloc(sizeof(VTOY_GPT_INFO));
@@ -143,21 +158,6 @@ static BOOL IsVentoyPhyDrive(int PhyDrive, UINT64 SizeBytes, MBR_HEAD *pMBR, UIN
 	{
 		CHECK_CLOSE_HANDLE(hDrive);
 
-		for (i = 0; i < 4; i++)
-		{
-			Log("=========== Partition Table %d ============", i + 1);
-			Log("PartTbl.Active = 0x%x", MBR.PartTbl[i].Active);
-			Log("PartTbl.FsFlag = 0x%x", MBR.PartTbl[i].FsFlag);
-			Log("PartTbl.StartSectorId = %u", MBR.PartTbl[i].StartSectorId);
-			Log("PartTbl.SectorCount = %u", MBR.PartTbl[i].SectorCount);
-			Log("PartTbl.StartHead = %u", MBR.PartTbl[i].StartHead);
-			Log("PartTbl.StartSector = %u", MBR.PartTbl[i].StartSector);
-			Log("PartTbl.StartCylinder = %u", MBR.PartTbl[i].StartCylinder);
-			Log("PartTbl.EndHead = %u", MBR.PartTbl[i].EndHead);
-			Log("PartTbl.EndSector = %u", MBR.PartTbl[i].EndSector);
-			Log("PartTbl.EndCylinder = %u", MBR.PartTbl[i].EndCylinder);
-		}
-
 		if (MBR.PartTbl[0].StartSectorId != 2048)
 		{
 			Log("Part1 not match %u", MBR.PartTbl[0].StartSectorId);