Finally switched from using a pair of IDE drives to a pair of nice new SATA optical drives.
The SATA DVD reader that I installed works fine. The Writer has power and is detected by windows but cannot read any disc that is inserted.
The Writer is a Lite-On iHAS324 A. Windows has decided to label it a DVD RAM drive despite it being a DVD writer, the utilities on the disc have done nothing to help.
The problem isn’t with the SATA ports as I’ve tried it in a couple of different configurations.
I’m running Windows XP Service Pack 3.
Should I just give it up as a faulty drive and return it or is it likely to be a software problem somewhere?