PC-DOS
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PC-DOS
The DOS operating system originally developed by Microsoft for the IBM PC. Up until DOS 6, PC-DOS was almost identical to Microsoft's MS-DOS for non-IBM PCs, and both versions were called "DOS." In IBM PCs, PC-DOS was the underlying operating system of Windows 3.x and was booted before Windows was loaded. See DOS 6.Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.