This indicates that you have a corrupt partition table that claims to have a partition that extends beyond the end of the disk. If you run sudo parted -l, it should fail with a similar error. You may be able to investigate and repair the problem using fdisk or gdisk.
** Changed in: ubiquity (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/1304356 Title: [14.04] ubiquity refuses to install on last partition on the disk To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1304356/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs