About DR DOS

History of DR DOS

DR DOS® was originally released in 1988 by Digital Research Incorporated (DRI) as version 3.31. It proved to be a successful rival to alternatives like PC DOS and MS-DOS, with DRI continuing to publish updates until their sale to Novell in 1991.

Under Novell's ownership, DR DOS published version 7.0, which was well received by the community. DR DOS would change hands from Novell to Caldera in 1996, and again from Caldera to DeviceLogics in 2002.

In 2022, Whitehorn Ltd. Co. acquired DR DOS and began the process of clean-room re-implementing this historically significant operating system. Version 9.0 entered beta testing in 2026, bringing DR DOS into the modern era while honoring its rich heritage.

What's Next?

We're actively developing DR DOS 9.0 with regular beta releases. Future revisions will include:

FAT32 filesystem support
Additional drive letter support
Enhanced batch scripting features (FOR loops, SET command)
Input and append redirection operators
Enhanced command features and utilities
Improved hardware compatibility

Follow our release notes and check back regularly for updates!

License and Usage Terms

Beta builds of DR DOS 9.0 are released without warranty of any kind and are for non-commercial use only. The use of this software is governed by our end-user licensing agreement.

Important: For non-commercial users, we highly recommend that you do not install DR DOS on a device with important data, as the risk of data loss is possible during this beta phase.

For commercial licensing inquiries, contact sales@dr-dos.com.