More likely you ran into this from a while back:
grub2 (1.98+20100706-1) unstable; urgency=low
* New Bazaar snapshot.
- USB hub support.
- Fix GRUB_BACKGROUND configuration ordering.
- Fix corruption of first entry name in a reiserfs directory.
- Don't include MD devices when generating device.map (if you're using
RAID and upgraded through 1.98+20100702-1 or 1.98+20100705-1, you may
need to fix this up manually).
-- Colin Watson <[email protected]> Tue, 06 Jul 2010 18:06:40 +0100
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https://bugs.launchpad.net/bugs/681535
Title:
Auto-detection of a filesystem of /dev/md0 failed.
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