You will have to try and find out what format the unit is using. As the dvr formats the drive itself, its quite possible the it has a propriatary format that only the unit can read. I don’t see anything about what format it uses on sony’s site. If its a format that can be read in a computer, you should be able to just hook it up and read it (you don’t need to set the computer to read any particular format). Are you wanting to get video off it, or are you just wanting to be able to use the drive in a computer?