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FDD - Floppy disk drive, the most common being a 1.44MB 3-1/2" drive like those used in today's PC computers. File - A collection of information, such as text, data, or images saved on a disk or hard drive.
5" DSHD FDD storage capacity The unformatted capacity of 3½-inch double sided high density floppy disk is 2.0 megabytes; in its most common format it has a capacity of 1,474,560 bytes or 1.47 MB (simply dividing by 1,000,000).
For example, a hard disk drive (HDD) reads and writes hard disks, and a floppy drive (FDD) accesses floppy disks. A magnetic disk drive reads magnetic disks, and an optical drive reads optical disks.
See also: Digital, Shape, Hard drive, Data, PC
 
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