Writing your own OS using assembly language
This tutorial will teach you how to write your own operating system using assembly language. Contains bootsector example code.
How to write an operating system
Writing an operating system is something that can not only be interesting (if you're one of those people that get turned on by Int 13....) but, it is also a great learning experience.
Through creating your own operating system you will learn exactly what goes on behind the scenes, elevating you above the average programmer that just writes in Visual Basic.
In this tutorial you will be tought by examples, and by the end you should have created your own operating system.
http://www.astalavista.com/library/o.../writing.shtml