DOS 4 or DOS-4 may refer to:
* The Soviet space station
Salyut 4
Salyut 4 (DOS 4) (russian: Салют-4; English translation: Salute 4) was a Salyut space station launched on December 26, 1974 into an orbit with an apogee of 355 km, a perigee of 343 km and an orbital inclination of 51.6 degrees. It ...
Versions of the IBM PC DOS family:
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IBM DOS 3.40, announced successor of IBM DOS 3.30 in 1988
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IBM DOS 4.00, released successor of IBM DOS 3.40 in 1988
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IBM DOS 4.01, a bug-fix release at the end of the same year
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IBM DOS 4.02, a ROMed version of DOS in IBM PS/1 machines
Versions of the Microsoft MS-DOS family:
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MS-DOS 4.0 (multitasking)
MS-DOS 4.0 was a multitasking release of MS-DOS developed by Microsoft based on MS-DOS 2.0. Lack of interest from OEMs, particularly IBM (who previously gave Microsoft multitasking code on IBM PC DOS included with TopView), led to it being rel ...
, a multitasking version in 1986/1987 by Microsoft
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MS-DOS 4.1 (multitasking), a multitasking version for the ICL DRS PWS in 1987
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MS-DOS 3.40, announced successor of MS-DOS 3.31 in 1988
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MS-DOS 4.00 (IBM-developed)
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 rebranding as IBM PC DOS, and a few ...
, successor to MS-DOS 3.31 in 1988
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MS-DOS 4.01
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 rebranding as IBM PC DOS, and a few oper ...
, a bug-fix release in 1988
**
Russian MS-DOS 4.01
In computing, Russification involves the localization of computers and software, allowing the user interface of a computer and its software to communicate in the Russian language using Cyrillic script.
Problems associated with Russification befo ...
, a special Russian version of MS-DOS 4.01 (RDOS) in 1990
See also
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4DOS
4DOS is a command-line interpreter by JP Software, designed to replace the default command interpreter COMMAND.COM in Microsoft DOS and Windows. It was written by Rex C. Conn and Tom Rawson and first released in 1989. Compared to the default, ...
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DOS (disambiguation)
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DOS 3 (disambiguation)
DOS 3 or DOS-3 may refer to:
* Kosmos 557 aka Salyut-3 or DOS-3, a Russian space station
* Apple DOS for the Apple II series, released in versions 3.1, 3.2, and 3.3
* Atari DOS 3 for the Atari 8-bit family
It may also refer to versions of the Mi ...
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DOS 5 (disambiguation) DOS 5 or DOS-5 may refer to:
* The Soviet space station Salyut 6
* DOS 5 (OS/2), one of the early project names for the then still unreleased IBM and Microsoft OS/2 1.0 between 1985 and 1987
* DR DOS 5.0
* MS-DOS 5.x, by Microsoft
* IBM P ...
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