Comment 115 for bug 477169

Agostino: really? That's very interesting. The fact that I now have two installs on the exact same machine, one had the "problem" after updates and was "repaired" with a separate /boot filesystem, and the other a fresh install with all updates and no problems at all, makes me wonder... Could it have something to do with ntfs fragmentation? I've done the Wubi install more than once on this machine, always with the same result (same grub2 problem after updates). Today was the first time I did a fresh install followed by all updates, and no problems booting at all. This problem is rather unusual, I have to admit.

I left my original /boot directory intact on my original root.disk (I just mount boot.disk on top of it), that's the original /boot that grub2 can't boot. Can you think of any further tests on a known-bad /boot for comparison to a known-good one?