The Glory and Failure of IBM OS/2: The Split with Microsoft, the Tenacity of Engineers, and the Reasons for Its Defeat by Windows

Why did a technologically advanced OS fail to become the protagonist of the PC market?In the late 1980s, IBM and Microsoft ...
Ars Technica

Microsoft open-sources infamously weird, RAM-hungry MS-DOS 4.00 release

Microsoft has open-sourced another bit of computing history this week: The company teamed up with IBM to release the source code of 1988’s MS-DOS 4.00, a version better known for its unpopularity, ...