DR DOS® carries forward the legacy of Gary Kildall's groundbreaking work in operating systems. Originally developed by Digital Research Inc. in 1988, DR DOS was a technically superior alternative to MS-DOS, offering better performance and compatibility.
This is not just another DOS clone. DR DOS® 9.0 is a faithful clean-room reimplementation, built from scratch to honor Kildall's vision while creating a modern, legally unencumbered DOS for the next generation of enthusiasts, developers, and hackers.
Latest Release: DR DOS 9.0 Revision 330
Released March 14, 2026
What's Included
DR DOS 9.0 comes with a comprehensive set of commands and utilities:
- Core File Management: CD, COPY, DEL, DIR, MD, MOVE, REN, TYPE, and more
- EDIT Text Editor: Full-featured editor with colored display, menus, keyboard shortcuts, and clipboard support
- System Utilities: MEM (memory information), VER (version), DATE, CLS, MORE
- Advanced Tools: HEXDUMP for debugging, MOUSE driver support, REBOOT utility
- Low-Level Access: PEEK, POKE, and JMP commands for direct memory manipulation and code execution - perfect for hackers and experimenters
For Hackers: DR DOS 9.0 includes unique memory manipulation commands (PEEK, POKE, JMP) that allow direct access to system memory, making it an excellent platform for learning about operating systems, testing low-level code, and DOS development.
Who Is This For?
DR DOS 9.0 is ideal for:
- DOS enthusiasts and retrocomputing hobbyists
- Developers interested in operating system development and low-level programming
- Educational purposes and learning about operating systems
- Testing classic DOS software compatibility
- Embedded systems requiring a minimal DOS environment
- Anyone curious about the heritage of PC operating systems