Long before Windows, and even before MS-DOS, Microsoft sold a Unix-based operating system it called Xenix in 1980. It was the first OS made by the company, but it eventually sold it off in 1987. On ...

Microsoft finally open sources DOS 1.0 - and it's so much more than the code ...

For students of early PC history, this isn’t even the first piece of 86-DOS history that has been newly rediscovered this decade. Just two years ago, the earliest known version of 86-DOS was ...

History painstakingly preserved.

MS-DOS or Microsoft Disk Operating System was the dominant operating system for Personal Computer throughout the 80s. MS-DOS is a non-graphical command line operating system. MS-DOS allows the user to ...

The Rise of DOS: How Microsoft Got the IBM PC OS Contract The reason Microsoft became so big comes down to the best deal ever made in the history of computing, between the fledgling software company ...