I am helping a friend upgrade his Windows XP box. I bought a brand new Passport external drive, plugged it in, computer recognized it and installed drivers. When I go to my computer, it does not show it. If I go in and start a backup of entire computer, it does not show this drive in the list. I can see it in the Device Manager and plugging in any other USB flash drives show in My Computer. I have uninstalled and reinstalled drivers. What the heck! This may sound crazy but is the computer somehow setup to prevent any sort of backup or cloning of drive?