Don't stress girls!! If you really are stuck then swap hd using the 007 evo hack. It works cos I've done it myself, also I have found that I have been locked out with my original drive so I just used another drive from another box that I unlocked 1st! I have a modchip so no problem is to big.
I have tried to foolproof my xbox now for when m$ counterstrike with new checks, I have external drives now one is original intouched the other is evox backup drive, I followed :
External HDD Mod Tutorial (v0.1)
Tutorial written by : Efini found on xbox-scene
both in cheap £10 caddies. Cheers to m$, Efini, xbox-scene for helping me educate myself. Just need a pole switch nopw so i dont have to swap to wires for the drives, i have been looking for an ide switcher....they must make them? Anyone?