DOS 1 or DOS-1 may refer to:

  • The Soviet space station Salyut 1, also called DOS-1

It may also refer to versions of Seattle Computer Product's 86-DOS (the predecessor to MS-DOS and PC DOS):

  • 86-DOS 1.00, SCP OEM released version on 28 April 1981, licensed to OEMs including Microsoft
  • 86-DOS 1.01, SCP internal version in May 1981
  • 86-DOS 1.10, SCP OEM released version in July 1981, sold to Microsoft and renamed to MS-DOS
  • 86-DOS 1.14, basis for IBM Personal Computer DOS 1.0

It may also refer to versions of the Microsoft MS-DOS family:

It may also refer to versions of the IBM Personal Computer DOS family:

It may also refer to versions of the Digital Research operating system 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
  • PalmDOS 1.0, a Novell successor to Digital Research's DR DOS 6.0 tailored for early palmtop PCs

It may also refer to versions of the FreeDOS operating system:

  • FreeDOS 1.0, a free and open-source DOS 7.1-compatible operating system distributed since September 2006
  • FreeDOS 1.1, a successor released in January 2012
  • FreeDOS 1.2, a successor released in December 2016

See also

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