Backups wont play. What could I be doing wrong?

[buzzon]

are you tring to make backups of the original disk or a backup,what kind of burner do you have,are you writing dao aka raw-disk at once,are the game you tring to back up protected-does it need to be patched.if you dont know if they are proctected go here and check it out http://www.megagames.com/psx/psx_patches.shtml