MS-DOS

Technology & Computing abbreviation · Computer

MS-DOS
Stands forMicrosoft Disk Operating System
CategoriesTechnology & Computing

MS-DOS stands for Microsoft Disk Operating System, a computer abbreviation.

Command-line operating system that Microsoft supplied for IBM PCs and compatibles from 1981, driven by commands such as dir, copy and format at the C:\> prompt. It was the platform on which the PC software industry was built before Windows.

Example: The 1990 accounting program only runs under MS-DOS, so we keep it alive in DOSBox.

Usage notes

Microsoft bought the rights to 86-DOS, written by Tim Paterson at Seattle Computer Products, and licensed it to IBM as PC DOS. The last standalone release was MS-DOS 6.22 in 1994. Microsoft has published the source code of several versions under the MIT License, most recently MS-DOS 4.0 in 2024.

More computer abbreviations

  • ITIL – Information Technology Infrastructure Library
  • ITSM – IT service management
  • KB – Knowledge Base
  • Mac – Macintosh
  • MBR – Master Boot Record
  • MDM – Mobile device management
  • MSP – Managed service provider
  • NT – New Technology
  • NTFS – New Technology File System
  • OCR – Optical character recognition
  • OMR – Optical mark recognition
  • OOBE – Out-of-box experience

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