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Cobalt setup screen and startup

Cobalt is a lightweight operating system based on FreeDOS, which aims to make DOS more accessible and easier to use on modern hardware and virtual machines.

Cobalt is still very early in development, and isn’t much more than FreeDOS with a custom installer at this point.


See the GitHub issues list for planned features. There is no finished release yet, but you can download a nightly build to try it in a virtual machine (or burn it to a CD).

Download Nightly build Discussion Board Join Discord

The Cobalt distribution is licensed under the GNU General Public License v3, but Cobalt also contains binaries from the FreeDOS Project that may be under different source licenses.