With this hack, “you can then patch the DVD firmware to remove the media lock, allowing you to boot backups.” Videos after the jump. One caveat:

All the dics you burn have to be Dual Layer, even if the burned image is only 3gig, it must still be on a dual layer DVD. These aren’t the cheapest of things but make sure you stick with a good brand such as Verbatim, this way you’ll be kinder to your Xbox DVD drive laser and your games will last longer, check out CD-R Media for a cheap supplier of Verbatim Dual Layer DVD’s

[via HackedGadgets]

DVD Firmware Flashing

Opening the Xbox 360