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 ...

History painstakingly preserved.

The software that helped build Microsoft into what it is today has been open-sourced on GitHub. The release marks 45 years ...

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Microsoft has officially released another significant piece of DOS history. The "Paterson Listings" include the earliest ...

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30 years ago today, Microsoft bought the rights to the Quick and Dirty OS, re-branded it as MS-DOS, struck a deal with IBM, and made history. Share on Facebook (opens in a new window) Share on X ...

In context: Back in 1980, Tim Paterson was creating a new operating system he called QDOS or Quick and Dirty Operating System. The system was later renamed 86-DOS, as it was being designed to run on ...

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 ...

Two big things happened in the world of text-based disk operating systems in June 1994. The first is that Microsoft released MS-DOS version 6.22, the last version of its long-running operating system ...