A 64-bit Operating system kernel from scratch

This repository houses a custom operating system kernel along with a Docker container for streamlined development and testing.

Demo

Prerequisites:

• A text editor such as Vim or VSCode.
• Docker for creating our build environment.
• Qemu for emulating our operating system.
  • Remember to add Qemu to the path so that you can access it from your command-line. (Windows instructions here)
  • or download it in wsl

Setup

Build an image for our build-environment:

docker build buildenv -t test-buildenv

Enter build environment:

• Linux or MacOS: docker run --rm -it -v "$(pwd)":/root/env test-buildenv
• Windows (CMD): docker run --rm -it -v "%cd%":/root/env test-buildenv
• Windows (PowerShell): docker run --rm -it -v "${pwd}:/root/env" test-buildenv
• Use the linux command if you are using WSL, msys2 or git bash

Build for x86 (other architectures may come in the future):

make build-x86_64

To leave the build environment, enter exit.

Emulate

You can emulate your operating system using Qemu: (Don't forget to add qemu to your path!)

qemu-system-x86_64 -cdrom dist/x86_64/kernel.iso

• Note: Close the emulator when finished, so as to not block writing to kernel.iso for future builds.

Alternatively, you should be able to load the operating system on a flash drive and boot into it.

Cleanup

Remove the build-evironment image:

docker rmi myos-buildenv -f