You need to attach the log files to a bug report *before* rebooting - they're only stored in memory and will be erased as soon as you reboot. http://wiki.ubuntu.com/DebuggingUbiquity/AttachingLogs has advice. I don't suppose you'll be able to reproduce this again?
Bear with me for this slightly strange question, but how much RAM do you have? It's possible that the installer didn't notice a failure to mount the target filesystem and was actually uselessly "installing" into its own ramdisk ... ** Changed in: ubiquity (Ubuntu) Assignee: (unassigned) => Colin Watson Status: Unconfirmed => Needs Info -- install crashed w/ 75% files copied: disk full https://launchpad.net/bugs/91962 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs