New DVD drive not reading backups..

[justpancho]

Hi. I have been having a bit of a problem with my xbox lately. I kept getting the dirty disc issues but ignored them until the drive just sort of quit. My friend had accidentally hurt his xbox so he gave me his extra parts to try to fix mine. I put in his Samsung DVD drive and now it will read all my original discs but none of my backup copies of the same discs. My xbox is a 1.0 and the old DVD drive was a Phillips drive. I burn all my backups onto Verbatum DVD+R. I had loaded an original game onto the actual xbox itself and it still plays so I know it will still read backups. I can still ftp into the box and I can still watch my home movies on my pc through the xbox onto the T.V.

I was under the impression that the Samsung can read both DVD-R and DVD+R. Is that wrong? Do I need to buy another Phillips drive to use the backups of my originals?

Thanks for any help you can provide