Killing grub-mount (there were like 5 running on an upgrade to 15.04) allowed the upgrade to continue.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/970260 Title: Setting up memtest86+ hangs because of "grub-probe: error: unknown filesystem" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/970260/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
