Bug#488193: update-grub fails

[Felix Zielcke]

From: "Shams Fantar" <sfantar at snurf.info>

> /boot/grub/device.map :
> 
> (hd0)   /dev/hda
> (hd1)   /dev/sda
> 
> /etc/fstab :
> 

>Now we know why grub thinks hd1 is your /

try grub-install with --recheck if that creates device.map right
else you have to change device.map manually and then update-grub works right.
device.map is only created if it either doestn't exist or if you run grub-install with --recheck