if [ -f "$device_map" ]; then
mv -f "$device_map" "$device_map.old"
fi
+ # possible situation when upgrading from Grub1 to Grub2
+ if [ ! -x /usr/sbin/grub ]; then
+ echo "."
+ echo "CN: FATAL ERROR while trying to execute GRUB1!"
+ echo "CN: Do not reboot your server and report this to OTRS immediately!"
+ exit 1
+ fi
grub --batch --no-floppy --device-map="$device_map" <<'EOF' >/dev/null 2>&1
quit
EOF