why wont backup of a pc game work on another PC?
other than the one it was created on, which it works perfectly on?
i used clonecd and clonyxxl?
both PC’S are the same except for one has burner and the other doesnt
the game is NFS2

Assuming that the backup wont play on the CDRom. I believe NFSHP2 uses a newer version of safedisc 2.8 which CloneCD seems to be having trouble copying. This may explain why its not working in CDRom but the CDWriter. In some cases CDWriters can read their own witten CDs even though they may contain slight errors while other CDRoms may not.

Try the search function in the forum as making backups of Safedisc 2.8 and NFSHP2 have been discussed quite recently.