EntityQ47604· pop 97· linked from 4,545 articles

Q47604

MS-DOS ( ; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its alternate branding as IBM PC DOS, and a few operating systems attempting to be compatible with MS-DOS, are sometimes referred to as "DOS" (which is also the generic acronym for disk operating system). MS-DOS was the main operating system for IBM PC compatibles during the 1980s, from which point it was gradually superseded by operating systems offering a graphical user interface (GUI), in variou

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Key facts

OS.name: MS-DOS
OS.logo: Msdos-icon.svg
OS.logo_size: x64px
OS.screenshot: 220px
OS.caption: The command-line interface, showing that the current directory is the root of drive C:
OS.developer: Microsoft
OS.family: DOS
OS.discontinued: yes
OS.influenced_by: TOPS-10, CP/M
OS.ui: Command-line (COMMAND.COM), text (DOS Shell)
OS.website: Internet Archive MS-DOS overview
OS.source_model: Closed source; open source for versions 1.25, 2.11 and 4.00

Article

26 sections

Contents

History
COMPAQ-DOS
{{anchor|DCP|WDOS}}Versions
MS-DOS 1.x
MS-DOS 2.x
MS-DOS 3.x
MS-DOS 4.0 / MS-DOS 4.x
MS-DOS 5.x
{{anchor|6.0|6.2|6.21|6.22}} MS-DOS 6.x
MS-DOS 7/8 (as part of Windows 9x)
{{anchor|ADOS|HDOS}}Localized versions
Competition
Legal issues
Use of undocumented APIs
Windows command-line interface
Earlier versions of Windows
Windows NT
End-of-life
Legacy compatibility
Related systems
Physical RAM limit
Physical hard disk drive limit
See also
Notes
References
External links

IBM licensed and released it in 1981 as PC DOS 1.0 for use in its IBM Personal Computer. Although MS-DOS and PC DOS were initially developed in parallel by Microsoft and IBM, the two products diverged after twelve years, in 1993, with recognizable differences in compatibility, syntax and capabilities. Beginning in 1988 with DR-DOS, several competing products were released for the x86 platform.