It IS indeed possible. You need the 007/ Mechassult exploit on a Memory card.
You also need "Pheonix Bios Loader", which works with the exploit. It loads hacked bios off the HDD. Also, you should have "Slayers Auto Install". It will do everything, including reformat. Lemme find a tutorial.
http://forums.xbox-scene.com/index.p...T&f=45&t=76808
um, this is a little different than I thought. I was thinking of a hotswap type thing. Make sure the drive you have is lockable too.