Making the backup is about as easy as getting a new DVD drive, correct model of course and either flashed with or flash it yourself with the Kreon FW. The 'trick' is getting the 360 to read it and that also requires flashing the drive in the 360. There are loads upon loads of tutorials on this and you shouldn't have any problems finding any of them, start in the Newbie Chat
Pinned topics, most every tutorial you need to do it all is there, and there are more about drive flashing in the Technical DVD-ROM
Not Case / Hardware Modding, Closed.