Microsoft has published the earliest-discovered version of the DOS operating system on an open-source GitHub repo. This comes after MS-DOS 1.25 and 2.x were open-sourced in 2018 and the source for ...

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 ...

In the annals of PC history, IBM’s OS/2 represents a road not taken. Developed in the waning days of IBM’s partnership with Microsoft—the same partnership that had given us a decade or so of MS-DOS ...

As the forerunner to the graphical user interfaces in Microsoft’s Windows platform, MS-DOS helped set the stage for the company’s dominance in the PC software market. When MS-DOS was released in 1981, ...

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 ...

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

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 ...