This also happens without md-raid. I have a normal Ubuntu installation on sdb. I just upgraded and got the same error. Grub is unable to find the partitions.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/987354 Title: error: no such partition. grub-pc fails to detect mdraid partitions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/987354/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs