Now that the xbox 360 can use larger external hard drives, can I format an external hard drive through the Xbox dashboard then swap it into the internal hard drive case on an original Xbox 360? I know there is a hack that involves dl'ing some formatting software and doing it all through PC, but that required specific HD's to work, and well is a lot of extra steps. I have an old 160Gb external HD I'm using with the Xbox but I'd rather swap out the 20Gb internal and get rid of some clutter on my shelf.