DOS

The boot screen and command-line interface of MS-DOS 6, with an example of its directory structure
The boot screen and command-line interface of FreeDOS, showing version information and an example of its directory structure

DOS (/dɒs/, /dɔːs/) is a family of disk-based operating systems for IBM PC compatible computers.[1] The DOS family primarily consists of IBM PC DOS and a rebranded version, Microsoft's MS-DOS, both of which were introduced in 1981. Later compatible systems from other manufacturers include DR-DOS (1988), ROM-DOS (1989), PTS-DOS (1993), and FreeDOS (1994). MS-DOS dominated the IBM PC compatible market between 1981 and 1995.

Although the name has come to be identified specifically with this particular family of operating systems, DOS is a platform-independent acronym for disk operating system,[2] whose use predates the IBM PC. Dozens of other operating systems also use the acronym, beginning with the mainframe DOS/360 from 1966. Others include Apple DOS, Apple ProDOS, Atari DOS, Commodore DOS, TRSDOS, and AmigaDOS.

  1. ^ Murdock, Everett (1988). DOS the Easy Way. EasyWay Downloadable Books. ISBN 0-923178-00-7.
  2. ^ Dictionary.com Archived 2017-11-12 at the Wayback Machine

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