To get the answer, just put a decimal point in the number "50"—my first Microsoft product was MS-DOS 5.0.

It still has excellent compatibility with MS-DOS software, including Windows 3.1 and earlier, and many of the built-in ...

The first step is getting DOS 6.22, the most recent version released ... which is a Mastodon client specifically built for MS-DOS by [SuperIlu]. There are pre-compiled packages available on ...

This means that they can, in theory at least, still run MS-DOS. The venerable Microsoft 16-bit OS may now be long discontinued, but there is still enough need for DOS that the open-source FreeDOS ...

Microsoft, in collaboration with IBM, has announced that it is open-sourcing MS-DOS 4.00 as the two worked together on the underlying code. MS-DOS or Microsoft Disk Operating System was first ...