IBM PC DOS

IBM PC DOS
Version 1.10 (1982) command line
DeveloperMicrosoft
IBM
Written inAssembly language, C
OS familyDOS
Working stateNo longer supported
Source modelClosed source
Initial releaseAugust 1981; 43 years ago (1981-08)
Latest releasePC DOS 2000 / April 1998; 26 years ago (1998-04)
Latest previewPC DOS 7.1 / 2003; 21 years ago (2003)
Available inEnglish (US), English (UK), Danish, Dutch, Finnish, French, German, Italian, Norwegian, Portuguese, Russian, Spanish, Swedish
Platformsx86
Kernel typeMonolithic kernel
Default
user interface
Command-line interface (COMMAND.COM)
LicenseCommercial proprietary software

IBM PC DOS (an acronym for IBM Personal Computer Disk Operating System),[nb 1] also known as PC DOS or IBM DOS, is a discontinued disk operating system for the IBM Personal Computer, its successors, and IBM PC compatibles. It was manufactured and sold by IBM from the early 1980s into the 2000s. Developed by Microsoft, it was also sold by that company as MS-DOS. Both operating systems were identical or almost identical until 1993, when IBM began selling PC DOS 6.1 with new features. The collective shorthand for PC DOS and MS-DOS was DOS, which is also the generic term for disk operating system, and is shared with dozens of disk operating systems called DOS.
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