cocotiOS

A simple OS implementation for IA32

Prerequisites

• QEMU simulator or bochs
• I only know QEMU...
• nasm compiler
• dd tool

How to compile

$ cd boot

$ nasm -I ../include/ -o mbr.bin mbr.S

$ nasm -I ../include/ -o loader.bin loader.S

$ dd if=./mbr.bin of=../img/cocotiOS.img bs=512 count=1 conv=notrunc

$ dd if=./loader.bin of=../img/cocotiOS.img bs=512 count=1 seek=1 conv=notrunc

$ cd ../img/

$ qemu-system-x86_64 cocotiOS.img

Current results

Reference

1. mikeos: write your own os
2. wiki: int 10h
3. x86 Assembly/Control Flow
4. Writing a boot loader in Assembly and C