OS BUILDING

GOALS:
Fit on a floppy disk
x86 Architecture
Basic File operations (Delete, Move, Create Dir, list, run)
Simple programs running on the CPU itself

How would I go about doing this. What language should I use?

How to write an OS
1 - Figure out every single low-level details (down to the registers and how they operate) of the following components:
 A - CPU (duh)
 B - FDD interface
 C - IDE interface
 D - VGA interface
2 - Write bootloader
3 - Develop a filesystem
4 - Develop a system call interface and what functions your OS will boil everything down to
5 - Develop a driver framework and a way to address devices
6 - Actually program all that
7 - Develop basic drivers
8 - Start writing basic tools to manage filesystem
TADA, A NEW OS