My first try writing a 64-bit Operating System Kernel

1. this just a multiboot loader
2. It just prints

Prerequisites

• VS Code.
• Docker for creating our build-environment.
• Qemu for emulating our operating system.

Setup

Build an image for our env:

• docker build buildenv -t myos-buildenv

Build

Enter build env: -docker run --rm -it -v "$pwd":/root/env myos-buildenv

Build for x86:

• make build-x86_64

To leave the build environment, enter exit.

##Emulate

• qemu-system-x86_64 -cdrom dist/x86_64/kernel.iso Alternatively, you should be able to load the operating system on a USB drive and boot into it when you turn on your computer. (I haven't actually tested this yet.)

Cleanup

Remove the build-evironment image:

• docker rmi myos-buildenv -f

Mistakes I made

• I am using a Windows 10 Home so Docker for desktop(hyper-v) doesnt work so use the docker for desktop- integrated with wsl VS code has a remote -wsl feature.

• While in the build env, I ran make build-x86_64, I got No rule to make target 'build-x86_64, my wsl wouldnt recognise the files in the directory (if you ls no files would be shown). solution- export pwd=/path/of/repo/root sudo docker run --rm -it -v "$(pwd)":/root/env myos-buildenv

  then again run your docker image