Tool Profile

86-DOS version 0.1-C

An original 86-DOS disk image, the MS-DOS precursor.

At a glance:

First seen:2026-05-24

Last seen:2026-05-24

Sightings:1

Source:archive.org

What it is

An original 86-DOS disk image, the MS-DOS precursor.

Why developers recommend it

Commenters highlighted it as an even earlier surviving release that you can still run.

Hacker News evidence

2026-05-24

One comment noted the 0.1-C binaries are earlier than the source release and can be downloaded and used in an emulator.

Microsoft open-sources "the earliest DOS source code discovered to date"