DOS-2

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 Atari 8-bit computers It may also refer to versions of the Microsoft MS-DOS family: * MS-DOS 2.00, Microsoft (internal) version in 1982 and 1983, successor of MS-DOS 1.xx, licensed to various OEMs including IBM * MS-DOS 2.01, Microsoft (internal) version in 1983 * MS-DOS 2.10, Microsoft (internal) version in 1983 * MS-DOS 2.11, 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, 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, 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

DOS-2 was a space station, launched as part of the Salyut programme.

History

It DOS-2 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 orbit. It instead fell into the Pacific Ocean. The station, which would have been given the designation Salyut 2 had it reached orbit, was structurally identical to Salyut 1, as it had been assembled as a backup unit for that station. Four teams of cosmonauts were formed to crew the station, of which two would have flown: Alexei Leonov and Valeri Kubasov Vasily Lazarev and Oleg Makarov Aleksei Gubarev and Georgi Grechko Pyotr Klimuk and Vitaly Sevastyanov Whilst Salyut 1 had been attempted to be visited by two three-person crews (Soyuz 10 and Soyuz 11), following modifications to the Soyuz 7KT-OK spacecraft (resulting in the new model Soyuz 7K-T) following the deaths of the crew of Soyuz 11, the spacecraft could only carry two cosmonauts, thus DOS-2 would have had two crews of two. Following the loss of the station, the crews were transferred to the DOS-3 programme.

References

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