The option to upgrade using ubiquity has been removed so this is no longer an issue.
ubiquity (18.04.6) bionic; urgency=medium [ Steve Langasek ] * If we are running ubiquity-dm on VT1, we must conflict with getty@getty1.service and not rely on some other display manager to do this for us. [ Brian Murray ] * Drop the option to upgrade from an old release using ubiquity as it is crashing and leaves users in a broken state. (LP: #1756862) ** Changed in: ubiquity (Ubuntu) Status: Confirmed => Won't Fix ** Tags removed: rls-aa-incoming -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1586303 Title: clear_partitions doesn't clear /boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1586303/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs