Some Info about the Xbox DVD drives

Philips Drive:

Will not read CD-R
Will read SOME (generally expensive media) CD-RW
Reads all DVD-R/RW
Does not read DVD+R/RW

Thomson Drive:

Will not read CD-R
Will only read SOME (generally expensive media) CD-RW
Reads all DVD-R/RW
Reads all DVD+R/RW

Samsung Drive:

Reads all CD-R/RW
Reads all DVD-R/RW
Will not read DVD+R/RW