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A Maxell-branded 3-inch Compact Floppy Disk. The floppy disk is a data storage and transfer medium that was ubiquitous from the mid-1970s well into the 2000s. [1] Besides the 3½-inch and 5¼-inch formats used in IBM PC compatible systems, or the 8-inch format that preceded them, many proprietary floppy disk formats were developed, either using a different disk design or special layout and ...
8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
Often represented as 5.25-inch, these floppy disk drives are obsolete. As the name indicates, two half-height devices can fit in one full-height bay. The dimensions of a 5.25-inch floppy drive are specified in the SFF standard specifications which were incorporated into the EIA-741 "Specification for Small Form Factor 133.35 mm (5.25 in) Disk ...
Although usually not supplied with the machine, floppy disk drives of the 5 1 ⁄ 4 inch (1541, 1570 and 1571) and, later, 3 1 ⁄ 2 inch variety were available from Commodore. The 1541 was the standard floppy disk drive for the Commodore 64, with nearly all disk-based software programs released for the computer being distributed in the 1541 ...
2 1 ⁄ 2 inch [2] [3] Single drive: 1, diskette: 2 16 8 512 2× 64 kB 270 GCR (4/5) Internally based on FDU-250 Micro Floppy Disk Drive Unit [2] Thomson: 5 1 ⁄ 4 inch Single 1 40 16 128 80 kB 300 FM Thomson UD90.070 Double 2 256 320 kB MFM Thomson DD90-320 [NB 17] 3 1 ⁄ 2 inch Double 1 80 16 256 320 kB 300 MFM Thomson TO9, Thomson DD09-350
The Macintosh external drives were the first to widely introduce Sony's new 3 + 1 ⁄ 2-inch rigid disk standard commercially and throughout their product line. Apple produced only one external 3 + 1 ⁄ 2-inch drive exclusively for use with the Apple II series called the Apple UniDisk 3.5.
The FileWare diskette has the same overall jacket dimensions of a normal 5¼ inch diskette, but because of the head arrangement, the jacket has non-standard cutouts for the heads, with two sets of cutouts on opposite sides of the spindle hole. The write enable sensor is also in a non-standard location, though most FileWare diskettes were ...
Developed under the code name "Corsair", it was a 3 1 ⁄ 2-inch HDD with the height of a 5 1 ⁄ 2-inch half-height device (1.6-inch high) and up to 1 GB on up to 8 95 mm disks. [78] [79] It was offered as a feature on certain models of the PS/2 and RS/6000. [79] It was the first OEM disk drive to use MR Heads. [3]