Microsoft MS-DOS

MS-DOS icon
MS-DOS icon 1992
Windows 3.1 release
(file: Pifmgr.dll)
Name: "MS-DOS"

Full name: "Microsoft Disk Operating System"

Categories: Electronics, Home - Office - School

Subcategory: Operating Systems

Developer: Microsoft
(founded on April 4, 1975, by Bill Gates and Paul Allen)

First version: 1.0

Released: August 12, 1981Bellevue, Washington, USA

Final release: Ver. 8.0 - September 14, 2000

Platforms: x86

Programming language: Assembly

Default user interface: Command-line, text

Features: MS-DOS 1.0 supported single sided diskette drive which could hold data up to 160 KB only. It was shipped when IBM first released their PC 5150 in August 1981. Microsoft then substantially rewrote the software to support subdirectories and hard disks; version 2.0 was released with the IBM PC-XT in March of 1983.

Interesting facts: A computer virus named "Brain" was released in its first form in January 1986, and is considered to be the first computer virus for MS-DOS. It infects the boot sector of storage media formatted with the DOS File Allocation Table (FAT) file system. Brain was written by two brothers, Basit Farooq Alvi and Amjad Farooq Alvi, from Lahore, Punjab, Pakistan.

Slogan: «MS-DOS gives you the only complete set of software tools for 16-bit systems. Now. From Microsoft».

Property: Microsoft Corporation

Source Code Download: Microsoft DOS V1.1 and V2.0 (

MS-DOS screenshot
A typical MS-DOS start screenshot

MS-DOS adv.
MS-DOS advertising (InfoWorld, April 19, 1982)

MS-DOS packaging
MS-DOS, first packaging (Ver. 3.2, 1986)

MS-DOS 8.0
MS-DOS Version 8.00: the latest version (2000, integrated in Microsoft Windows ME)

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