The mount point is "/tmp/boot", the path in the boot partition is
"/boot/grub/upgraded".
Origin of this mark
b9c1cf16 ("x86: add preinit hook for bootloader
upgrade")
Fixes
32f675ca ("x86: fix grub-bios-setup fail during sysupgrade")
Ref: https://bugs.openwrt.org/index.php?do=details&task_id=3140
Reported-by: Philip Prindeville <philipp@redfish-solutions.com>
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
-d "/tmp/boot/boot/grub" \
-r "hd0,${parttable}1" \
"/dev/$diskdev" \
- && touch /tmp/boot/grub/upgraded
+ && touch /tmp/boot/boot/grub/upgraded
umount /tmp/boot
fi