I can confirm this happens, although in my case it was with manually partitioning a 250 GB disk at install time. I've attached the two logs you want, although you'll see many different attempts at different sizes. Basically if I attempted to make / bigger than 200GB, I got the "can't have the end before the start" failure message.
** Attachment added: "partman" http://librarian.launchpad.net/7393506/partman -- prepare partition can't create > 200Gb paritions https://bugs.launchpad.net/bugs/107787 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs