It looks like DistUpgradeVeiwGtk3 was used and that should have used and displayed the following announcement:
ReleaseNotes: http://archive.ubuntu.com/ubuntu/dists/xenial/main/dist-upgrader-all/current/DevelReleaseAnnouncement ReleaseNotesHtml: http://archive.ubuntu.com/ubuntu/dists/xenial/main/dist-upgrader-all/current/DevelReleaseAnnouncement.html Try using apt-get update and apt-get dist-upgrade when you boot into console mode. ** Changed in: ubuntu-release-upgrader (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/1543384 Title: dist-upgrade from 14.04 wants to install 16.04 which doesnt start any more To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1543384/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
