Since I still have both computers: I plan on pulling the two DW1655 drives, and putting them in the computer with the two DVR-108 drives, and see what happens.
Not sure if I made myself clear, so here goes:
If you have more than one DVD burner installed in a computer, Nero gives you an option to burn files to multiple burners. I select that option, and start the burn process. I have never tried burning two completely different sets of files at the same time. In both computers, I have the DVD drives set as master and slave on the secondary IDE channel. I guess since I can do it on my computer, and my friend has witnessed this, he expects the same results on the one I built for him.
Michael, my friend had a DW1640, so I put that in with his DW1655. With a DW1640 and a DW1655, he could only burn at 1X to both drives at the same time. I searched everywhere for someone having similar issue, and could not find any. I then concluded the issue was with the two different drives, so I had him pickup another DW1655. When that didn’t solve the issue, I felt it was time to turn to the experts here.
TimC, I checked to make sure both drives are operating in DMA mode, and they are. I had a one of my DVR-108 drives drop to PIO4 out of the blue, which prevents anything greater than 1X even when burning only one disc.
Thanks for your input, I am sure with the talent on this board, a solution will come soon.
I am pulling drives now to see if my DVR-108 will burn at 16X on his computer, and I am going to see if the DW1655 will burn at anything other than 1X on mine.