rescuing my Lv2 Raid with Grub

[Tom H]

On Tue, Aug 7, 2012 at 6:56 AM, oxy <oxyopes at googlemail.com> wrote:
>
> this morning my desktop booted with errors. I repeatedly ran fsck
> and rebooted. It finally booted directly into grub. Look:
>
> grub rescue> ls
> (md/1) (md/2) (md/0) (hd0) (hd0/msdos3) (hd/msdos2) (hd0/msdos1) (hd1)
> (hd1,msdos3) (hd1,msdos2) (hd1,msdos1)
>
> grub rescue> ls (md0,1)
> error: unknown filesystem
>
> Trying "ls" on them all gives "error: unknown filesystem" except for
> some windows FS. The problem is, the only windows i have there is
> running inside a virtualbox. I cannot boot it from grub.
>
>
> It is a raid level 2 (see on the md points) under ubu 12.04.

It's not raid2. Probably raid1.

The "msdos..." simply means that you have BIOS disks.

What's the output of "set" at the "grub rescue" prompt?

On which of these partitions is "/boot/grub"?