A DOS-like hobby OS written in Rust and x86 assembly
To try it out, simply build the project yourself from source, or use attached bootable ISO image of the system (in Releases on Github) and run it in QEMU. https://blog.vxn.dev/rou2exos-rusted-edition
A DOS-like hobby OS written in Rust and x86 assembly launched on June 19, 2025 with 207 votes, #159 of 7,999 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
This is a hobby operating system written in Rust and x86 assembly that mimics DOS functionality. Designed for hobbyists and OS enthusiasts, it can be built from source or run directly using a bootable ISO image in QEMU. The project stands out for combining modern Rust with low-level x86 assembly to create a retro-style OS environment, making it suitable for learning about operating system design and x86 architecture fundamentals.
written from the facts on this page · September 2026
From the sources
A second iteration of a DOS-inspired hobby OS. Contribute to krustowski/rou2exOS development by creating an account on GitHub.
A second iteration of the RoureXOS operating system, rewritten in Rust. The goal of this project is to make the rou2exOS kernel to follow the microkernel architecture. For purposes of the external program development, there are two key links to consider opening when thinking about extending the system: To run the OS, you can use the attached ISO image from any Release , and run it in QEMU emulator. The system was also tested on the x86_64 baremetal (booted from the USB flash disk). To enable the filesystem functionalities, attach a IMG file to QEMU as well (in virtual floppy drive A). qemu-system-x86_64 -boot d -cdrom r2.iso -fda fat.img Preview ^ v0.10.4 : external program HELLOFS.ELF…from github.com
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