http://forums.xbox-scene.com/lofiversion/index.php/t475086.html
Alright, this is in fact a working boot method for backups!
This is the demo disk, with a little edited code, here is how it
works... Select one of the following demos, when into the boot disk
play for approx: 1 minute, then stop and eject the disk,
(using the center X in your controller), swap with
your backup title, DVD using one of the dump tools from PI,
hit the x to return to the dashboard, and viola your in!
Viene a decir que con el famoso disco de demos, jugamos un minuto, luego paramos y sacamos el disco, despues poniendo el que proponen podemos poner los backups que deseemos ¿es eso verdad?