I've never seen an 8' floppy drive. 8" is the largest FLOPPY that I'm familiar with. In HARD drives, I have a damaged 2' diameter platter, that I have been told came from a 1620 (but I have also been told that there weren't no sech animal, and that it must have come from a 1401) I find it amusing that when I show the 2' platter to my students, then put it away, then ask about it, they tend to estimate its size as 3 to 4 feet!