Bug#630107: [kfreebsd] cannot configure grub-pc (error: cannot find a GRUB drive for /dev/ad0s1)

[Robert Millan <rmh@debian.org>]

2011/6/11 Jonathan Nieder <jrnieder@gmail.com>:
>> If it's a regression, it could be a bug in GRUB or maybe it's a
>> silent ABI bump (I'd check if a GRUB rebuild helps).
>
> As I mentioned, after downgrading libgeom0 to 8.1-5,

I was referring to grub-common.

> Upgrading libgeom0 to 8.2-2 and running
>
>        dpkg-reconfigure grub-pc
>
> reproduces the problem again.

AIUI you don't need to run the package scripts, you should be
able to reproduce this with:

grub-probe -t drive /

> Why would a GRUB rebuild help?

It would help us weed out the possibility that there's an
ABI inconsistency (exposed when building GRUB with libgeom
8.1 and running it with libgeom 8.2).  But that's just one
possible cause.

-- 
Robert Millan