Bug#462701: Seeing this issue or a similar one on md partitions

[Loïc Minier]

        Hi,

 I had an unbootable system as a result of the "savedefault" command
 too, but I can't tell whether it's the exact same bug that the other
 submitters reported.  In my case I have:

 /dev/md0 => Debian's /boot
 /dev/md1 => Ubuntu's /boot
 /dev/md2 => LVM PV
                debian-root LV => Debian /
                ubuntu-root LV => Ubuntu /
                ...

 With md0, 1 and 2 being RAID 1 made of sda and sdb 1 2 and 3
 (respectively).

 I am chainloading the md1's grub from md0's grub and md0's parts are
 flagged bootable; sda/sdb have a MBR from the mbr package.  I think I
 grub-installed from Debian on /dev/sda1 and sdb1 then md0 and from
 Ubuntu on sda2 and sdb2 then md1.

 After a while, this broke without reason; presumably after a grub
 update.

 I grub-installed on sda* again instead of md, and this seemed to work
 again, but I decided to not use "default saved" and "savedefault" until
 I read about this bug.

 Let me know if you prefer a separate report.

   Cheers,
-- 
Loïc Minier