I picked up an old Yamaha 6416S SCSI CDRW which had been previously used in a PC connected to a PC Adaptec 2940UW SCSI card. I installed it in my Powermac 8500. It showed up on the Apple System Profiler. I had downloaded the latest Mac firmware update for the model from the Yamaha website earlier, but I had forgotten that I had already placed the update file on the PM8500 harddrive. I had the update stored on another computer, so I copied it off that computer with a zip disk and tried to input it into the 8500 using the 8500's IDE zip drive which was hooked up as a slave to an ATA66 PCI Sonnet controller Acard in the 8500. The zip disk was not recognized by the 8500. I then remembered that I already had the update on the 8500's harddrive, so I just went ahead and ran the update which seemed to work just fine. I opened up Toast and thought I'd do a test burn, and Toast recognized the Yamaha. I prepared some data, clicked record, the CD drawer opened and I inserted a CD-R into the CDRW, but it was spit back out, and I got the message to insert a blank media again. I tried a couple of more times but still no recognition of the CD-R. I shut down Toast and inserted a software CD into the Yamaha, and the CD was not recognized. Nothing came up on the desktop. I tried some different things with the CD reader extensions, but no luck, no CD's were ever recognized using the Yamaha, so I gave up on the Yamaha. I removed it and reinstalled the Apple SCSI CD drive to the 8500.
I then focused on the zip drive. I tried all the different combinations, slave, master, different cables, etc., but the zip drive was never recognized. I removed the zip drive from the 8500 and tried a different IDE zip drive, but still no recognition. It didn't show up in the Profiler and no zip disks mounted to the desktop. At that point, I thought maybe the Acard had become corrupted, so I checked Sonnet's website for a firmware update and there was a new one for the Acard, so I downloaded it on the other computer. The Acard update requires that nothing be connected to the Acard to perform the update, so I disconnected the ATA cable in the 8500 and hooked up an external SCSI harddrive and an external SCSI zip drive to the 8500 and rebooted to the external harddrive's OS 9.1. I then inserted a zip disk with the Yamaha update into the external zip drive, and the zip disk mounted to the desktop, no problem. I transferred the file from the zip disk to the external harddrive and ran the Acard update and still no problem. I shut down the 8500 and reattached the ATA cable to the Acard with the main ATA harddrive as master and the IDE zip drive as slave, and restarted. I then tried a zip disk in the IDE drive. No recognition, no mount to desktop, and still no recognition of the IDE zip drive in Profiler. I gave up on getting the IDE zip drive to work.
It then occurred to me that, while I had that setup with the external harddrive connected, that I might try reinstalling the Yamaha CDRW's firmware--maybe it hadn't taken well the first time, and maybe the Acard was causing some strange problem. So I kept the external SCSI harddrive and external SCSI zip drive connected to the 8500's external SCSI port and removed the Acard from the 8500. I removed the Apple CD drive and reinstalled the Yamaha CDRW. I restarted, booting to the external harddrive. I then took the zip disk that had the Yamaha update on it and inserted it into the external SCSI zip drive. This time the zip disk did not mount to the desktop, and when I checked the System Profiler, THE EXTERNAL ZIP DRIVE WAS NO LONGER RECOGNIZED!! What a pisser!!!! It then hit me that the Yamaha CDRW was possibly somehow killing my zip drives!!!! Is that possible? Could the Yamaha have some kind of virus or something that transfers to the zip drives simply by being connected to the same computer? If so, can I recover these zip drives? I thought maybe I'd try to see if these zip drives work on another computer, but now I'm afraid that if I hook them up to another computer that they will transfer the problem to that computer. AGGHHH! What am I doing with all this old hardware? The problems never stop raising their hoary heads.