KeOS is an educational project designed to help students learn core operating system concepts by implementing a minimal yet functional kernel from the ground up.
Note: KeOS is an individual project. All work must be completed independently.
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Do not share or publish your code.
Public forks and redistribution of this repository are strictly prohibited by the project license. Any unauthorized disclosure, including public forks, will result in severe penalties, including zero credit for all projects.
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During grading, all files except those explicitly whitelisted for each project will be replaced with the original versions.
Your implementation must compile and pass all test cases without modifying restricted files. Submissions that fail to meet these requirements may receive no credit for the affected components.
KeOS consists of five sequential projects, each building on the last. You will implement the concepts covered in the class on each project, reinforcing your understanding through hands-on development.
- System Call – Interface between user applications and the kernel
- Memory Management – Basic memory management and user-space execution
- Advanced Memory Management – Implementation of advanced memory management
- Process Management – Advanced multi-threaded and process control
- File System – File system with Journaling
For detailed instructions and documentation, refer to the KeOS Manual.
$ mkdir keos
$ cd keos
$ curl https://raw.githubusercontent.com/casys-kaist/KeOS/refs/heads/main/scripts/install.sh | sh-
Processor
A minimum of a 4-core x86_64 processor is required. The CPU must also have hardware virtualization enabled.
- Intel: Broadwell microarchitecture or newer.
- AMD: Zen 2 microarchitecture or newer.
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Memory (RAM)
- Minimum: 2 GiB or more
- Optimal: 4 GiB
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Host OS
- Supported: Ubuntu 24.04 LTS
- KeV: KAIST educational Virtualization for
Special Topics in Computer Science <Virtualization> (CS492).
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