Apple also produced the a UniDisk 3.5" for the Apple II series. This drive ended up being implemented in the original Macintosh 128K in 1984. However, staff who were concerned about the poor reliability of the FileWare mechanism maintained contact with Sony, which had been developing the newer 3½" format.
"Twiggy") disks and had working prototypes built with such a drive. Steve Jobs wanted the the new Macintosh platform to support FileWare (a.k.a. However, due to reliability problems with the drive, the Lisa 2 replaced the Twiggy mechanism with a smaller new 3½" format. It was to have been introduced in the Apple III, but was not implemented until the release of the Apple Lisa. Īn Apple 5.25 Drive (A9M0107) supported 5¼" floppies for the Apple IIe Card for the Macintosh LC.Ī FileWare disk with two exposed read areas.Īpple developed its own 5¼" format officially called FileWare, codenamed "Twiggy", after the 1960s fashion model. A UniDisk 5.25" was later produce to modernize the appearance of the drive for older Apple II models.
Apple also created the DuoDisk to support two floppies with the Apple IIe and the Disk IIc, a compact mechanism for the Apple IIc. This was succeeded by the Disk III for the Apple III which supported daisy chaining. The original Disk II floppy drive for the Apple II series was based on a mechanism built by Shugart Associates with a controller designed by Steve Wozniak. A pair of Disk II drives, with a 5¼" floppy in the bottom unit.
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