Reblogged by rmrenner ("The Old Gay Gristle Fest"):
obsoletemediauk@mastodon.world ("Museum of Obsolete Media") wrote:
An obscure floppy disk format from the mid-1980s, the Casio Disk Sheet SD-1. It was used in the CasioWord HW-120 word-processor via a built-in drive, plus some other models via an external drive, the MD-10.
It's one of a handful of disks that shared a 2.6-inch form factor.