- Blog
- MS-DOS
MS-DOS
Microsoft Open Sources Some of the Earliest MS-DOS Code
- Paul Thurrott
- Apr 29, 2026
-
4
comments
Microsoft today released the source code for he 86-DOS 1.00 kernel, which is among the…
Tech Nostalgia: A Computer Needs an OS Like a Fish Needs a Bicycle (Premium)
- Paul Thurrott
- Feb 20, 2025
-
5
comments
The first personal and home computers booted into a ROM, or read-only memory, that usually…
Microsoft Open Sources MS-DOS 4.0
- Paul Thurrott
- Apr 26, 2024
-
9
comments
Well, this came out of nowhere: Microsoft and IBM have open-sourced MS-DOS 4.0, a legacy…
Microsoft Open-Sources Early MS-DOS Versions, This Time to GitHub
- Paul Thurrott
- Oct 02, 2018
-
9
comments
Microsoft this week announced that it has "re-open-sourced" MS-DOS 1.25 and 2, this time to…