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FreeDOSNews July 3, 2026 2 min read

Microsoft Declares MS-DOS 6.22 and Earlier Obsolete

On December 31, 2001, Microsoft stopped supporting and patching MS-DOS 6.22 and older versions — though DOS embedded within Windows 95/98/Me lingered in support for years afterward.

#news#ms-dos#end-of-life

FreeDOSNews April 11, 2026 2 min read

Microsoft Open-Sources the Original MS-DOS on GitHub

In September 2018, Microsoft re-released MS-DOS 1.25 and 2.11's source code on GitHub under the MIT license — a genuinely open release, four years after a 2014 version that was source-available but not truly open.

#news#ms-dos#open-source

FreeDOSDeep Dive April 5, 2026 3 min read

FreeDOS vs. MS-DOS: Compatibility, Differences, and Why It Matters

Where FreeDOS achieves genuine binary compatibility with MS-DOS, where it deliberately diverges, and what that means for running real DOS software.

#freedos#ms-dos#compatibility