Same issue, same relevant error messages, same solution (fsck) on my system today that was updated to 2.6.37-12-generic #26 (I only boot into Natty ever occasionally).
Re: comment #3 (Colin): I'm confused by "Unfortunately, there is no way to mount an ext3 filesystem that requires recovery"; my Maverick fs is ext4 as is Tim's. Further, the Maverick partition boots just fine when mounted with an alternate grub2 boot disk & shows no requirement for "recovery". It is only when Natty does a update that the problem occurs. Yesterday I ran the first updates since the19 (I'll be happy to attach a history.log if that will help) & that included grub 1.99~rc1-1ubuntu2. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/683355 Title: Natty os-prober fails to detect Maverick installation -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs