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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; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
Size Density Sides Tracks tpi bpi Sectoring Coercivity Unformatted capacity per side 2 inch Video Floppy: 52 256 >800 kB or 50 fields of analog video [1] 2 inch LT-1: double 80 245 2 1 ⁄ 2 inch: Single 16 [2] [3] 48 [2] 64 kB 3 inch QuickDisk: 3.25 inch single 1 80 [4] 140 4,625 250 kB double 9,250 500 kB 3 1 ⁄ 2 inch: Single 2: 40 [5] 67.5 ...
Double density (DD) 3½-inch disks use an iron oxide coating, just as with 5¼-inch DD/QD disks. However, drives utilize stronger 670-oersted write heads and a narrower track width of 0.115 mm (0.0045 in) for a density of 135 tpi and 8,717 bpi. High density (HD) 3½-inch disks switch to a cobalt disk coating, just as with 5¼-inch HD disks ...
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 ...
STORY: (Tim Persky, Floppy disk seller)"If you think this is old, take a look at this. This is a floppy disk from the 1970s."This man is believed to be the world's last known bulk supplier of ...
In the early 2000s, most floppy disk types and formats became obsolete, leaving the 3 + 1 ⁄ 2-inch disk, using an IBM PC compatible format of 1440 KB, as the only remaining popular format. Different floppy disk types had different recording characteristics, with varying magnetic coercivity (measured in oersteds , or in modern SI units in ...
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 ...
The original disk cartridges came in capacities of 5, 10, and 20 MB; they are 8.23 x 11.02 x 0.71 inches, [1] about the size of a standard piece of letter paper but thicker. The most popular system was the Bernoulli Box II, whose disk cases are 13.6 cm wide, 14 cm long and 0.9 cm thick, somewhat resembling a 5¼-inch standard floppy disk .