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The original sources of MS-DOS 1.25 and 2.0, for reference purposes
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v1.25 MS-DOS v1.25 Release Sep 22, 2018
v2.0 MS-DOS v2.0 Release Sep 22, 2018 Remove ampersand + change to same title as README Oct 2, 2018 rewrote Readme in proper German. Oct 21, 2018 Rename to Oct 4, 2018 README in Arabic Oct 3, 2018 Update Oct 4, 2018 Spelling fix Oct 23, 2018 Update according to review Oct 4, 2018 MS-DOS README in Greek Oct 4, 2018 Slight update on the translation Oct 4, 2018 Added Hungarian README file Oct 4, 2018 Fix word choice and reformat to follow original English README Oct 4, 2018 Add Italian version of Oct 4, 2018 add README in Japanese Oct 4, 2018 Fixing a typo mistake on Korean Readme - redone Oct 4, 2018 README in Portuguese is now Oct 4, 2018 Merge pull request #91 from abnerescocio/patch-2 Nov 6, 2018 Changed "sinta-se à vontade" to "não hesite" Oct 5, 2018 Fixes proposed by @daskool Oct 8, 2018 Improve Swedish version of readme Oct 4, 2018 add for Thai language Oct 5, 2018 Add Turkish translation for README Oct 22, 2018 Translate README to zh-TW (Taiwan) Oct 4, 2018
msdos-logo.png Optimized PNG's Oct 1, 2018
msdos-logo_250x250.png Optimized PNG's Oct 1, 2018

MS-DOS logo

MS-DOS v1.25 and v2.0 Source Code

This repo contains the original source-code and compiled binaries for MS-DOS v1.25 and MS-DOS v2.0.

These are the same files originally shared at the Computer History Museum on March 25th, 2014 and are being (re)published in this repo to make them easier to find, reference-to in external writing and works, and to allow exploration and experimentation for those interested in early PC Operating Systems.


All files within this repo are released under the MIT (OSI) License as per the LICENSE file stored in the root of this repo.


The source files in this repo are for historical reference and will be kept static, so please don’t send Pull Requests suggesting any modifications to the source files, but feel free to fork this repo and experiment 😊.

If, however, you’d like to submit additional non-source content or modifications to non-source files (e.g., this README), please submit via PR, and we’ll review and consider.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact with any additional questions or comments.

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