MS-DOS 4.0 Open Sourced from Microsoft!

It seems like Microsoft open sourced their MS-DOS 4.0 .
It’s pretty cool, I think.

https://cloudblogs.microsoft.com/opensource/2024/04/25/open-sourcing-ms-dos-4-0/

Source code available on GitHub:
https://github.com/microsoft/MS-DOS

-stingraze

I've been trying to think of a practicable use for this since you posted it at 10:30 this morning and I literally can't think of anything.

6.22 or 7.0, I get. I'm just not sure how useful 4.0 would be. How many devices with an operating ceiling of DOS 4 are there that can't run 5 or 6?

Maybe a user can make a custom MS-DOS and run it on PocketDOS? But is such a thing allowed in the license terms, I’m not sure.

I think I'd sooner head to 6.22 or Free DOS, caldera etc. But each to their own.

I don't really see the real incentive for Microsoft to open source it now at 2024, but I guess it will be a promotional thing too.

Nice find, @stingraze

I found this really cool article from Arstechnica that's worth the read about it!
https://arstechnica.com/gadgets/2024/04/microsoft-and-ibm-release-source-code-for-one-of-the-weirdest-versions-of-ms-dos/

@torch

Thanks for the link. I will take a look at it.

-stingraze