I've never really understood the difference between things like BIOS, UEFI, bootloaders, and the kernel, or really much of anything that goes on when a computer boots. This is my space to learn about all of that, specifically diving into the UEFI spec and how to create UEFI applications. In the future, maybe I'll even attempt to write my own kernel and mini OS. We'll see!

This code can be run via Docker or natively.

• docker

$ ./build_run_docker.sh

To run the container again without rebuilding:

$ ./run_docker.sh

• build-essential
• qemu-system
• ovmf
• mtools
• parted

Once you are up and running in the Docker or have installed the requirements natively, you can run the following commands:

Compiles the UEFI application, and generates an image named OS.img.

Runs the image in QEMU with the required OVMF firmware.

Removes all generated files. Files removed include:

• *.img
• *.efi
• *.so
• *.o

This makes a fresh build, which is equivalent to running:

$ make clean
$ make