These are the relevant errors:
EXT4-fs (sda2): INFO: recovery required on readonly filesystem
EXT4-fs (sda2): write access unavailable, cannot proceed
Unfortunately, there is no way to mount an ext3 filesystem that requires
recovery without replaying the journal and thus causing writes to that
partition. os-prober used to replay the journal, but that caused
serious data-loss bugs in some cases so we stopped doing that.
The workaround is simply to perform recovery on the filesystem in
question using the 'fsck' tool. I regret the need for this, but
unfortunately the alternative is worse.
As for why your Maverick system always needs recovery, I can't say.
Perhaps it isn't shutting down cleanly?
** Changed in: os-prober (Ubuntu)
Status: New => Won't Fix
** Changed in: os-prober (Ubuntu)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/683355
Title:
Natty os-prober fails to detect Maverick installation
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