I have CD and DVD backups that play just fine on my xbox, but none of my CD backups play on my friends xbox. I'm guessing his just doesn't like to read CDs. Is there an easy way to create a DVD backup from the CD backup?
Yup.. you need cloneXB or qwix (one of the few times you may need qwix) Extract your disk via ftp from your xbox as usual, then set cloneXB or Qwix to make an xiso with the target set to dvd.. hit go and wait while the programs do the usual patching etc, then simply burn the result to a dvd in the normal manner.