update-grub help

[Tom H]

On Tue, Jun 1, 2010 at 12:20 PM, Dave Howorth
<dhoworth at mrc-lmb.cam.ac.uk> wrote:
> Tom H wrote:
>> Try:
>>
>> Create a device.map in Ubuntu with the same content as the OpenSuse's
>> or the equivalent /de/disk/by-uuid values and save it (for example) in
>> /root rather than in /boot/grub.
>
> I actually already tried copying the suse device.map over the ubuntu one
> but it made no difference. grub still doesn't see hd6.
>
>> Run (in Ubuntu)
>> grub-setup --root-device='(hd0)' --device-map=/root/device.map /dev/sda
>
> I'll give it a try though.

Oops. No /dev/sda at the end... Sorry.

So:
grub-setup --root-device='(hd0)' --device-map=/root/device.map

Copying it over is not enough. Hopefully using it with grub-setup will
allow grub to see your OpenSuse drive at boot.