Thanks, killing grub-mount did the trick for me. Bug #986833 might be related. My error message when the computer hang was
... Found memtest86+ image: /memtest86+.bin File descriptor 3 (pipe:[15340]) leaked on lvs invocation. Parent PID 4755: /bin/sh rmdir: konnte »/var/lib/os-prober/mount“ nicht entfernen: Das Gerät oder die Ressource ist belegt rmdir: konnte »/var/lib/os-prober/mount“ nicht entfernen: Das Gerät oder die Ressource ist belegt grub-probe: Fehler: no such disk. -- 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/memtest86+/+bug/970260/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
