im having problems playing some games like prince of persia 2 on back up disk i get a message saying warning the disk ur using is dirty or damaged but on my friends xbox it works?i can back the game up but still get the same message and im having trouble backing up to hard drive with some games on xbox game managment ive had my chip and programs for nearly 2years now is it because i need to update the programs for the new games or is my laser on my drive no good plse help me
nicholas