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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 ...
History of the floppy disk. 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 ...
3 1 ⁄ 2 inch SHARP CE-1600F, CE-140F: 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 ...
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 ...
Distribution Media Format (DMF) is a format for floppy disks that Microsoft used to distribute software. [ 1][ 2] It allowed the disk to contain 1680 KiB of data on a 3 1⁄2 -inch disk, instead of the standard 1440 KiB. As a side effect, utilities had to specially support the format in order to read and write the disks, which made copying of ...
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. [2]
Disk II drives. The Disk II Floppy Disk Subsystem, often rendered as Disk ][, is a 5 + 1 ⁄ 4-inch floppy disk drive designed by Steve Wozniak at the recommendation of Mike Markkula, and manufactured by Apple Computer It went on sale in June 1978 at a retail price of US$495 for pre-order; it was later sold for $595 (equivalent to $2,780 in 2023) including the controller card (which can ...
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 51⁄4 -inch) floppy disks which ...