8 inch floppies in 1986? My recollection was that the 5¼ inch floppy was ubiquitous with 3½ inch floppies as the up and coming next-generation technology.
8-inch floppies were actually quite common in the mid-80's on machines such as the OP described. I've still got a few stashed in some archives somewhere, with old code I wrote. I shudder to think the effort required to use those floppies again somehow, though .. not exactly the same dilemma I face with the drawer full of Iomega JAZ and ZIP drives, though .. :P
You might want to copy that stuff ASAP if you haven't done so already, because it's not going to get any easier to read in the future. Both due to age of the media itself and the weird formats involved, for which reading equipment is starting to get quite rare and hard to find.
I'm a "collector" in that I bought the stuff originally and never got rid of it. I recently purchased a FC5025 from device side data. With Apple ][ disks from early 80's, I had about a %50 rate of reading them successfully. It's even worse on my TRS-80 cassettes.
