> basically an enlarged 5.25" disk Those 8 inch disks were not enlarged 5¼-inch disks. The 5¼-inch ones were shrunk 8 inch disks. They were a fairly inconveni

> basically an enlarged 5.25" disk Those 8 inch disks were not enlarged 5¼-inch disks. The 5¼-inch ones were shrunk 8 inch disks. They were a fairly inconvenient form factor, the main benefit was the much reduced density, which made them super resistant to wear-and-tear. A lot of 8 inch floppies written in the 1980s still work just fine: last time I checked, BART used them. I'm not sure they were ever commercially available in high density configurations.