On Wed, 30 Jul 2008, Chuck Cole wrote: >> What personal computer predated the 8" floppy? > > Altair 8800, MITS, Cromemco, Sol-20, Apple, Kim, TRS-80, Commodore, ... > > .. many! Some were based upon the 8080, others the 6502. > > My first, c1971, was based on the 8008, a predecessor of the 8080. Your source says that chip came out in November 1972. Here's a list of some disks and when they were introduced: http://en.wikipedia.org/wiki/Floppy_disk#Disk_formats I'm surprised to see how early some of these came out. I remember a friend telling me that he used to pay $10 for one 360K 5¼" floppy, but by then (1988?) we were getting HD 5¼" disks (1155 KB) for $1. Mike