Alright, I give up. I need the invocation of higher powers to help me with this one. I took apart a CDRW SCSI enclosure (a blue Lacie to be exact) thinking I could easily put a hard drive in and make it into a HDSC for my 512ke... boy was I wrong on the easy part. I began this project months ago, but never really got into it until today. I was experimenting with AppleTalk with my Power Mac 8500 when I decided to try the HD project again. So I got myself a fresh System 6 System Tools disk, and began to play around with the drive. It wouldn't show up when I tried using the HDSC Setup app. I decided to try plugging it into my 8500 and sure enough it shows up. So I tried formatting it as unallocated, but that kept failing. So I then formatted it as the default HFS, which worked. I then tried installing System 6 to it and that worked too. I tried to plug it into my 512ke again and it failed to boot, nor did it show up when I booted off the System Tools disk or used the HDSC setup app. So @bunnspecial suggested looking at my SCSI termination. The enclosure's SCSI settings are completely bypassed as it plugs into the special CDRW ODD, so the only termination is on the HDD itself, a 1GB Apple-branded Quantum Fireball. Upon inspection, it had no termination pin on it whatsoever, thus not being terminated. So I tried putting one on TE, which made no change. I then tried each one individually, which didn't work either. So now I've hit a standstill and idk where to go next, hence why I'm asking here. Few notes: -My 512ke has a MacSnap 2MB upgrade board, which then has a MacSnap SCSI on top of that. With the limited info I found about it online, it doesn't appear to need any additional drivers or anything to work. -I tried to use my Microsoft MacEnhancer as well incase the MacSnap SCSI wasn't working, but AFAIK it wasn't working with that either because it still failed to show up on the desktop. -Because I'm using a System Tools disk as opposed to an actual OS disk (which I have failed to find online), any modification I make to the disk on my 8500 causes it to not be bootable on my 512ke, a frustrating problem that's preventing me from trying something like SCSIprobe to see if it's at least seeing the drive in some way.