Ah, it's documented in /usr/share/doc/systemd/README.Debian. Boot with holding left shift to get the grub boot menu, "e"dit the default entry, and append "systemd.debug" on the "linux" line. Then you have a root shell on Ctrl+Alt+F9.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1333140 Title: Fix udev rules to consider mmc rpmb partitions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1333140/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs