Microsoft finally open sources DOS 1.0 - and it's so much more than the code

Want a blast from the past? Microsoft just open-sourced its very first operating system, offering a rare insight into the ...

Microsoft open-sources 86-DOS 1.00, the ancestor of Windows

The source code for 86-DOS 1.00, the OS that eventually became MS-DOS and Windows, is now available on GitHub.
XDA Developers on MSN

Microsoft open-sources MS-DOS 1.0, offering a rare look at PC history

This is a rare look at the tech giant's first operating system ...