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FreeDOS, the Open-Source MS-DOS, Is Now 30 Years Old (And Still Going)
There's a sizable community of retro computing enthusiasts who like to run classic operating systems like DOS. You can find many people online who restore old computers and put FreeDOS on them.” ...
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Microsoft releases MS-DOS 4 source code on GitHub — 45 year old code now open-source
The source code, which is nearly 45 years old, has been released under the MIT license, allowing tinkerers free rein. MS-DOS 4.00 is quite ... Ray Ozzie and a young computer researcher called ...