Why do you think the disks are Unix-related? I'm not saying that it's impossible to run Unix on a 11/23 (in fact I was the one who recovered RL02 packs with V6 hacked to run on a 11/23) but it's 99.99% certain that this system ran either RT-11 or RSX-11, given the context. Now, if the buyer is dumb enough to buy the system and not use the disk drives, it's his responsibility to figure out how the heck he's ever going to boot the OS. Tim.

It was. So was DOS-11, RT-11, RSTS/E, RSX-11-*, IAS, etc. Anything but the very lowest end (11/04, 11/03, etc.) if you want to run Unix. While Unixes show up on -11's in many applications, they were least popular in industrial-control type situations, which is where most -11's are used. Of course, just to complicate things, they were using Unix variants on 11-based industrial control systems too! And you are right, it is indeed possible that this particular 11/23 has some Unix packs in the deal, I'm just pointing out that it's unlikely. And you were especially correct that a buyer would be unwise to ditch the drives and packs. An -11 is more than just the CPU box, if you want to do anything even vaguely useful/interesting! Tim.