# Old partition scheme
grub_extn=${dev}4
elif [[ $(blockdev --getsize64 ${dev}5) == 8388608 ]]; then
+ # Old partition scheme
grub_extn=${dev}5
else
grub_extn=${dev}7
fi
- mount $dev /mnt
+ mount $grub_extn /mnt
if $first; then
if [[ -e /mnt/grubenv ]]; then
set -x