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Unofficial DOS icon.svg
Initial releaseAugust 12, 1981 [info]
Stable release8.0 [info]
Source modelVersions 1.25 and 2.0 Open
Other versions closed
LicenseMS-EULA or MIT license (v1.25 and 2.0)
Kernel typeMonolithic kernel
Support status
Starting MS-DOS

MS-DOS is a computer operating system by Microsoft Corporation. It stands for "Microsoft Disk Operating System", and came from an operating system Microsoft bought called QDOS, or the "Quick and Dirty Operating System." The operating system used a command-line interface for the user to input commands. It was popularly used in PCs before a GUI operating system called Microsoft Windows came out, and still is used in some places today.

OS/2 was originally made by a joint agreement between the Microsoft and IBM companies. OS/2 was maintained by IBM until 2006. OS/2 was supposed to replace MS-DOS, but that replacement did not succeed. MS-DOS was the framework behind Windows operating systems until an operating system known as Windows XP.

MS-DOS is a text-based operating system, meaning that a user works with a keyboard to input data and receives output in plain text. Later, MS-DOS often had programs using a mouse and graphics to make work more simple and quick. (Some people still believe that working without graphics is really more efficient.) It is called a disk operating system because it was originally made to be loaded into a computer's memory with a floppy disk each time the computer is started (booted) up.

How-To Books[change | change source]

Many books were written on how to use MS-DOS. A popular introductory book was MS-DOS for Dummies, by Dan Gookin, the book in the For Dummies series of easy to follow instruction books.