I tried chrooting into the system and running grub-install then grub- probe from there; the final lines were
/usr/sbin/grub-probe: info: opening md0,1. /usr/sbin/grub-probe: error: no such disk. Then I build grub from source (bzr revision 3473 from lp:grub) and ran grub-probe, this time getting /usr/sbin/grub-probe: info: opening mduuid/77de814b368e97ab4029c9d92332ed91,1. ext2 So it looks like something has been fixed in grub that hasn't been packaged yet. ** Also affects: grub Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/880766 Title: Ubiquity fails with EFI and software RAID To manage notifications about this bug go to: https://bugs.launchpad.net/grub/+bug/880766/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs