It’s a dream of every noob that even before coding the first “Hello World” program, student want to know how to code an OS. Dreams are good but this is harder than one can image. If you are so strong with your dream, rather than thinking of coding your OS from scratch better you try building your own Arch. Arch Linux is a fully customizable, light weight operating system. The CD image can be downloaded. But this is actually a very slim installation and it’s not at all usable. You will have to install the window manager, desktop environment and everything else you see on a full fledged operating system.
One of the main disadvantage of Arch Linux is it’s cryptic text based installer. So better you watch some video and get familiarised with the instalation procedure.
Here are a few video tutorials for the installation and customization of Arch Linux.
Try Linux From Scratch. It’s the only way to start your own Linux distro.