I have a Plextor BD-R PX-B940SA 1.08 (ATA), and when I insert a DVD+R or any +R, I can't change the book type to -R. I know it is not the discs I use because my secondary burner is able to change the book type and they work fine. I go into the settings and when I choose Plextor, and then change for: either selection i choose, it says: Unknown (FAILED!) Reason: Invalid Command Operation Code. So I then went into advanced, and choose Plextor as the Drive OEM, and then I put in:
Drive OEM: Plextor BD-R
Drive ID String: PX-B940SA1.08 (ATA)
Running windows 7 Home Premium 64bit
Intel Core 2 Quad CPU Q8200 @2.33 GHz 2.33 GHz
4gb RAM
Any suggestions??? TIA
