DOS 20 may refer to IBM OS/2 versions:
*
OS/2 2.0 ("DOS" version 20.00)
*
OS/2 2.1 ("DOS" version 20.10)
*
OS/2 Warp 3
OS/2 (Operating System/2) is a series of computer operating systems, initially created by Microsoft and IBM under the leadership of IBM software designer Ed Iacobucci. As a result of a feud between the two companies over how to position OS/2 re ...
("DOS" version 20.30)
*
OS/2 Warp 4
OS/2 (Operating System/2) is a series of computer operating systems, initially created by Microsoft and IBM under the leadership of IBM software designer Ed Iacobucci. As a result of a feud between the two companies over how to position OS/2 re ...
("DOS" version 20.40)
*
OS/2 Warp 4.5 ("DOS" version 20.45)
See also
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DOS (disambiguation)
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DOS 2 (disambiguation) DOS 2 or DOS-2 may refer to:
* A failed Soviet space station DOS-2, part of the Salyut programme
* Atari DOS 2.0 for the Atari 8-bit family
It may also refer to versions of the Microsoft MS-DOS family:
* MS-DOS 2.00, Microsoft (internal) version ...
*
DOS 10 (disambiguation) DOS 10 may refer to OS/2 versions:
* OS/2 1.0, "DOS" version 10.00 by Microsoft and IBM
* OS/2 1.1, "DOS" version 10.10 by Microsoft and IBM
* OS/2 1.2, "DOS" version 10.20 by Microsoft and IBM
* OS/2 1.3, "DOS" version 10.30 by IBM
See also
* ...
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DOS 30
Virtual DOS machines (VDM) refer to a technology that allows running 16-bit/32-bit DOS and 16-bit Windows programs when there is already another operating system running and controlling the hardware.
Overview
Virtual DOS machines can operate ei ...
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