[Campion]

Uh, that's a 3.5" 'floppy' disk, although by then, they came in a hard plastic case that wasn't floppy anymore. Here's what an original floppy disk looked like:

That's an 8-inch floppy. When I was a co-op engineer in college in the early 1980s, the place where I worked had lab computers that used them, but they were already obsolete. Held 384k IIRC. That's kilobytes, not megabytes!

[Red Badger]

We had 12 inch floppies...................