This is a critical bug. It led to a path requiring a clean install of Ubuntu and a restore of user data from backups. The upgrade was ultimately unrecoverable even when booting to a Live USB stick to continue the upgrade.
This is a critical bug. It led to a path requiring a clean install of Ubuntu and a restore of user data from backups. The upgrade was ultimately unrecoverable even when booting to a Live USB stick to continue the upgrade.