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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 ...
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, 5 + 1 ⁄ 4-inch, and 3 + 1 ⁄ 2-inch floppy disks. This is a list of different floppy disk formats. ... 3 inch QuickDisk: 3.25 inch single 1 80 [4] 140 ...
Close-up of 3 + 1 ⁄ 2-inch disk Standard 3 + 1 ⁄ 2-inch disk with a blank label. In 1981, Sony introduced their 3 + 1 ⁄ 2-inch floppy disk cartridge (90.0 mm × 94.0 mm) having a single sided unformatted capacity of 218.8 KB and a formatted capacity of 161.2 KB. [citation needed] A double sided version was available in 1982.
Variables included the size of media (nominal 8-inch, 5 + 1 ⁄ 4-inch, 3 + 1 ⁄ 2-inch and others), encoding of data on the media (FM, MFM, M²FM, GCR), the number of disk tracks, one or two sides, the number of sectors in each track, and hard- or soft-sectoring. Even media that was physically interchangeable between two systems might not ...
As of 2023, 2.5-inch and 3.5-inch hard disks are the most popular sizes. By 2009, all manufacturers had discontinued the development of new products for the 1.3-inch, 1-inch and 0.85-inch form factors due to falling prices of flash memory, which has no moving parts. [citation needed]