Comment 11 for bug 756564

I just ran into this bug as well (upgrade from maverick to natty).

I remember that I saw something I interpreted as a warning flying by when I did the dist-upgrade. Some part of grub complained that it couldn't probe /dev/disk/by-id/ata-WDC-....something. I had a look and there was indeed a wrong entry in /boot/grub/device.map. I assumed that this would be either ignored or fixed at some later point and rebooted... (stupid me)

Indeed, I recently replaced disks, that file pointed to my old harddisk. I had a look at my notebook which I already upgraded successfully and don't have a device.map here. Guess I can tell you more once the other box is up again :-/

P.S.: Offering a grub resuce shell without even a help command is crap.