I just had my superdrive replaced, the previous one died. This drive plays and burns CDs fine but will not recognize a DVD. I have tried both a commercial movie DVD as well as a blank. I am running 10.3.9 and here are the specifics of the drive: PIONEER DVD-RW DVR-105: Manufacturer: PIONEER Model: PIONEER DVD-RW DVR-105 Revision: 1.30 Serial Number: CDDL021309WL Drive Type: CD-RW/DVD-RW Disc Burning: Apple Supported/Shipped Removable Media: Yes Detachable Drive: No Protocol: ATAPI Unit Number: 0 Socket Type: Internal I am a PC convert and not very knowledgable with this operating system. Could this be a software issue? Is there something that I can set or re-set? I have preferences set to open the DVD player when a disk is inserted. The replacement drive was purchased from WeLoveMacs so I suspect it is refurbished. Any advice would be appreciated.