I think this is almost dupe of bug #9006 (except this one is on ubiquity). If you agree, I'll open this one there (I'd guess it's easier to track that way).
** Also affects: xubuntu-meta (Ubuntu) Importance: Undecided Status: Unconfirmed -- /boot is on root partition by default https://launchpad.net/bugs/88633 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs