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 ...

Members of the Windows 1.0 team at their 40-year reunion this week. L-R, kneeling/sitting: Joe Barello, Ed Mills, Tandy Trower, Mark Cliggett, Steve Ballmer (holding a Windows 1.0 screenshot) and Don ...

PC-DOS 1.00 would lead to Microsoft becoming computing's top dog Microsoft continues to embrace open source. The source code and annotations provide insight into the operating system's earliest days.

Microsoft open-sourced 86-DOS 1.00 source code on GitHub for its 45th anniversary, according to PCWorld, including kernel and PC-DOS development snapshots. This historically significant software, ...

The year was 1983. Microsoft was slowly becoming a well-known tech company in the PC space. Two years before, in 1981, Its MS-DOS operating system would be installed in the first IBM PC. It launched ...

On November 20, 1985, over two years after it was first announced by Microsoft, the company finally released Windows 1.01. It was Microsoft's first attempt at a GUI PC operating system. Ten days ago, ...