There are some hints in the older related bug #588530 ("Automounting not prevented with GParted in Ubuntu 10.04"). It appears that this could be a bug in gparted not locking the drive to prevent automounting, or the automounter not respecting the gparted lock.
** Also affects: gparted (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1078445 Title: Xubuntu install fail due partition auto mount defeats Gparted To manage notifications about this bug go to: https://bugs.launchpad.net/thunar/+bug/1078445/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs