Search VTEFI directory for UEFI boot files.

When user install for example Windows in the reserved space of Ventoy USB stick in UEFI mode.
Windows will create part 3 as the EFI partition and when you boot the USB stick, the BIOS may skip Ventoy and directly boot the Windows.
To avoid this, we suggest to rename the directory name from EFI to VTEFI.

INSTALL/grub/localboot.cfg

@@ -81,6 +81,11 @@ else
                     terminal_output  console
                     chainloader /efi/Microsoft/Boot/bootmgfw.efi
                     boot
+                elif [ -f ($vtoydev,$partid)/VTEFI/Microsoft/Boot/bootmgfw.efi ]; then
+                    set root=($vtoydev,$partid)
+                    terminal_output  console
+                    chainloader /VTEFI/Microsoft/Boot/bootmgfw.efi
+                    boot
                 fi
             else
                 break
@@ -109,6 +114,11 @@ else
                 terminal_output  console
                 chainloader /efi/boot/bootia32.efi
                 boot
+            elif search -n -s -f /vtefi/boot/bootia32.efi; then
+                unset VTOY_SEARCH_NO_VTOYEFI
+                terminal_output  console
+                chainloader /vtefi/boot/bootia32.efi
+                boot
             else
                 unset VTOY_SEARCH_NO_VTOYEFI
                 echo "BOOTIA32.EFI NOT found ..."
@@ -126,6 +136,15 @@ else
                     chainloader /efi/xorboot/xorboot.efi
                 fi
                 boot
+            elif search -n -s -f /vtefi/xorboot/xorboot32.xor; then
+                unset VTOY_SEARCH_NO_VTOYEFI
+                terminal_output  console
+                if [ -f /vtefi/xorboot/bootia32.efi ]; then
+                    chainloader /vtefi/xorboot/bootia32.efi
+                elif [ -f /vtefi/xorboot/xorboot.efi ]; then
+                    chainloader /vtefi/xorboot/xorboot.efi
+                fi
+                boot
             else
                 unset VTOY_SEARCH_NO_VTOYEFI
                 echo "xorboot NOT found ..."
@@ -139,6 +158,12 @@ else
                 terminal_output  console
                 chainloader /efi/boot/bootaa64.efi
                 boot
+            elif search -n -s -f /vtefi/boot/bootaa64.efi; then
+                unset VTOY_SEARCH_NO_VTOYEFI
+                terminal_output  console
+                chainloader /vtefi/boot/bootaa64.efi
+                boot
+            else
             else
                 unset VTOY_SEARCH_NO_VTOYEFI
                 echo "BOOTAA64.EFI NOT found ..."
@@ -152,6 +177,11 @@ else
                 terminal_output  console
                 chainloader /efi/boot/bootx64.efi
                 boot
+            elif search -n -s -f /vtefi/boot/bootx64.efi; then
+                unset VTOY_SEARCH_NO_VTOYEFI
+                terminal_output  console
+                chainloader /vtefi/boot/bootx64.efi
+                boot
             else
                 unset VTOY_SEARCH_NO_VTOYEFI
                 echo "BOOTX64.EFI NOT found ..."
@@ -169,6 +199,15 @@ else
                     chainloader /efi/xorboot/xorboot.efi
                 fi
                 boot
+            elif search -n -s -f /vtefi/xorboot/xorboot.xor; then
+                unset VTOY_SEARCH_NO_VTOYEFI
+                terminal_output  console
+                if [ -f /vtefi/xorboot/bootx64.efi ]; then
+                    chainloader /vtefi/xorboot/bootx64.efi
+                elif [ -f /vtefi/xorboot/xorboot.efi ]; then
+                    chainloader /vtefi/xorboot/xorboot.efi
+                fi
+                boot
             else
                 unset VTOY_SEARCH_NO_VTOYEFI
                 echo "xorboot NOT found ..."