Not sure if this is an issue with (legacy) grub or do-release-upgrade. Managed to complete the installation by purging grub and reinstalling.
** Package changed: ubuntu => ubuntu-release-upgrader (Ubuntu) ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1309829 Title: Upgrade from 13.10 to 14.04 hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1309829/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs