DOS 2 or DOS-2 may refer to: * A failed Soviet space station

DOS-2 DOS-2 designation given to a space station, launched as part of the Salyut programme, which was lost in a launch failure on 29 July 1972, when the failure of the second stage of its Proton-K launch vehicle prevented the station from achieving orbi ...

, 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 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 ope ...

, Microsoft (internal) version in 1982 and 1983, successor of MS-DOS 1.xx, licensed to various OEMs including IBM *

MS-DOS 2.01 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 ...

, Microsoft (internal) version in 1983 * MS-DOS 2.10, Microsoft (internal) version in 1983 *

MS-DOS 2.11 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 ope ...

, Microsoft (internal) version in 1983 ** MS-DOS 2.11R, a ROMed version for Tandy PCs in 1988 * MS-DOS 2.12, a special OEM version for the TI Professional in 1983/1984 * MS-DOS 2.25, Microsoft version with extended multilanguage support in 1985 It may also refer to versions of the IBM PC DOS family: * PC DOS 2.0, successor of PC DOS 1.1 in 1983 * PC DOS 2.1, successor of PC DOS 2.0 in 1983 *

PC DOS 2.11 IBM PC DOS, an acronym for IBM Personal Computer Disk Operating System, is a discontinued disk operating system for IBM PC compatibles. It was manufactured and sold by IBM from the early 1980s into the 2000s. Developed by Microsoft, it was also ...

, successor of PC DOS 2.1 in 1984 It may also refer to operating systems of the Digital Research family: * DOS Plus 1.0, a single-user variant of Concurrent PC DOS in 1985 * DOS Plus 1.1, a single-user variant of Concurrent PC DOS in 1985 *

DOS Plus 1.2 DOS Plus (erroneously also known as DOS+) was the first operating system developed by Digital Research's OEM Support Group in Newbury, Berkshire, UK, first released in 1985. DOS Plus 1.0 was based on CP/M-86 Plus combined with the PCMODE e ...

, a single-user variant of Concurrent PC DOS 4.1 in 1986 * DOS Plus 2.1, a single-user variant of Concurrent PC DOS 5.0 in 1988

See also