Please attach /var/log/apt/term.log.
** Changed in: os-prober (Ubuntu) Status: New => Incomplete ** Changed in: grub2 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1620589 Title: unattended-upgrade stuck because of "unknown filesystem" from os- prober To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1620589/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs