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2. Floppy disk - Wikipedia

   en.wikipedia.org/wiki/Floppy_disk

   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 ...

3. Floppy disk drive interface - Wikipedia

   en.wikipedia.org/wiki/Floppy_disk_drive_interface

   Most controllers support two floppy drives, so a cable could have 5.25-inch style connectors, 3.5-inch style connectors, or a combination. After IBM introduced the "twist" to floppy cables, and when both 5.25-inch and 3.5-inch drives were in common use, many cables had four connectors: one of each type before the twist, and one of each type ...

4. Micropolis Corporation - Wikipedia

   en.wikipedia.org/wiki/Micropolis_Corporation

   Micropolis Corporation (styled as MICROPΩLIS) was a disk drive company located in Chatsworth, California and founded in 1976. Micropolis initially manufactured high capacity (for the time) hard-sectored 5.25-inch floppy drives and controllers, later manufacturing hard drives using SCSI and ESDI interfaces.

5. History of the floppy disk - Wikipedia

   en.wikipedia.org/wiki/History_of_the_floppy_disk

   White 5¼-inch floppy disk. Floppy disks were supported on IBM's PC DOS and Microsoft's MS-DOS from their beginning on the original IBM PC. With version 1.0 of PC DOS (1981), only single-sided 160 KB floppies were supported. Version 1.1 the next year saw support expand to double-sided 320 KB disks. Finally, in 1983, DOS 2.0 supported 9 sectors ...

6. Drive bay - Wikipedia

   en.wikipedia.org/wiki/Drive_bay

   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 ...

7. List of floppy disk formats - Wikipedia

   en.wikipedia.org/wiki/List_of_floppy_disk_formats

   3 inch Double 1 40 9 512 180 kB 300 MFM Single head drive, but double-sided floppy discs (total of 360 kB per floppy) Amstrad PCW8512/9512: 3 inch Double 2 80 9 512 720 kB 300 MFM 720 kB mode uses both sides - ensure disc inserted correct way up. Apple II: 5 1 ⁄ 4 inch Double 1 35 13 256 soft 113.75 kB 300 GCR [NB 2] 1 16 140 kB 3 1 ⁄ 2 ...