I can't get a Hitachi Touro Desk 2TB external HDD to format for a ViP612. When I enter Menu--> Multimedia--> My Media--> Manage Device it asks me to format the attached USB device. When I press "yes" it proceeds to format the drive and when finished returns me to the last channel I was on. There were no error messages and everything seemed to work. When I now go back to Menu--> Multimedia--> My Media--> Manage Device it asks me to do it all over again! What is going on?