I have a Yamaha CD RW (model # CRW4416S) that is not mounting volumes. I think the hardware is good, but have not other box to try it out on.
When a disk is put in, it does not spin up at all, but the tray will open and close. ASP and SCSI probe see the hardware, but no volume mountable.
I have been dicking around with the extensions but have been starting off bare bones and adding as needed to fine tune and streamline the box - adding the CD RW was a new step and it does not work.