I used Super Duper to create a bootable clone on an external firewire drive. When I restart my MBP holding down the option key I can choose the external drive. OSX (104.11) starts to load and then encounters a name and password popup. Entering the administrator name and password of the original drive fails. Only one account on the machine - still using the admin password originally chosen. Any thoughts, wise ones, as to why the clone won't recognize the password - or work arounds to allow this drive to boot? Many thanks (first-time poster, long-time lurker).