3.5 inch Floppy Disk

In 1982 the Microfloppy Industry Committee, a consortium ultimately of 23 media companies, agreed upon a 3½-inch media specification based upon but differing from the original Sony design. The first drives compatible with this new media specification were shipped in early 1983. In 1984 Apple Computer selected the format for their new Macintosh computers. Then, in 1985 Atari adopted it for their new ST line, and Commodore for their new Amiga. By 1988 the 3½-inch was outselling the 5¼-inch.