![]() ![]() For other uses, see Floppy (disambiguation).Ĩ-inch, 5 + 1⁄ 4-inch, and 3 + 1⁄ 2-inch floppy disks 8-inch, 5 + 1⁄ 4-inch (full height), and 3 + 1⁄ 2-inch drives A 3 + 1⁄ 2-inch floppy disk removed from its housingĪ floppy disk or floppy diskette (casually referred to as a floppy or a diskette) is a type of disk storage composed of a thin and flexible disk of a magnetic storage medium in a square or nearly square plastic enclosure lined with a fabric that removes dust particles from the spinning disk. Thus, USB attached floppy drives cannot read XDF formatted media."Floppy" redirects here. Floppy disks formatted using XDF can only be read in floppy disk drives that are attached directly to the system by way of an FDC. ![]() Floppy distributions of OS/2 3.0, PC DOS 7 and onward used XDF formatting for most of the media set. However, the first cylinder uses standard formatting, providing a small FAT12 section that can be accessed without XDF support and on which can be put a ReadMe file or the XDF drivers. When formatted as XDF disks, 3½-inch floppies can hold 1860 kB, and 5¼-inch floppies can hold 1540 kB, using different number of sectors as well as different sector size per track (not all sectors in the same track are of the same size). It is supported natively by IBM's PC DOS versions and by OS/2 Warp 3 onward, using the XDF and XDFCOPY commands (directly in OS/2). ![]() The IBM e Xtended Density Format ( XDF) is a way of superformatting standard high-density 3½-inch and 5¼-inch floppy disks to larger-than-standard capacities.
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