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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; they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold separately ...
Unformatted capacity per side 2 inch Video Floppy: 52 256 >800 kB: 2 inch LT-1: double 80 245 2 1 ⁄ 2 inch: Single 16: 48: 64 kB 3 inch QuickDisk: 3.25 inch single 1 80: 140 4,625 250 kB double 9,250 500 kB 3 1 ⁄ 2 inch: Single 2: 40: 67.5: 8,650 soft: 665 Oe: 250 kB [citation needed] Double 80: 135: 8,717: 665 Oe: 500 kB [citation needed ...
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. 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, 5¼-inch, and 3½-inch floppy disks. A floppy disk is a disk storage medium composed of a thin and flexible magnetic storage medium encased in a rectangular plastic carrier. It is read and written using a floppy disk drive (FDD). Floppy disks were an almost universal data format from the 1970s into the 1990s, used for primary data ...
Developed under the code name "Allicat" at IBM Rochester, MN, it was a full-height 5 1 ⁄ 2-inch HDD (3.25-inch high) that combined two 3 1 ⁄ 2-inch devices in one, with up to 2.013 GB capacity on up to 8 95 mm disks. IBM 0662. The 0662 first shipped in June 1993.
Thus HDD Form factors, initially followed those of 8-inch, 5.25-inch, and 3.5-inch floppy disk drives. Because there were no smaller floppy disk drives, smaller HDD form factors developed from product offerings or industry standards. 8-inch 9.5 in × 4.624 in × 14.25 in (241.3 mm × 117.5 mm × 362 mm).
Most floppy disks used by PCs use the FAT12 file system format, which imposes certain practical defaults on the logical geometry in order to be recognizable by all operating systems. Sometimes disks may use a more exotic file system. SSDD originally referred to Single Sided, Double Density, a format of (usually -inch) floppy disks which could ...
The Zip drive is a "superfloppy" disk drive that has all of the standard 3 + 1 ⁄ 2-inch floppy drive's convenience, but with much greater capacity options and with performance that is much improved over a standard floppy drive. However, Zip disk housings are similar to but slightly larger than those of standard 3 + 1 ⁄ 2-inch floppy disks.
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