Writing an entire OS?

Has anyone here ever writen an entire OS, or thought about writing one? I planing to write one from scratch in lisp based on the linux kernel. Im kind of tired on of unix like systems and windows is buggy crap too.

Another Lisp OS project?

As much as I like Lisp OSes, are you sure you want to undertake this project? OSes are reasonably large systems and creating and maintaing them are large undertakings. A large part of this includes hardware support, which means a lot of tedious work implementing drivers.

If you want to see some Lisp OSes, you could look at Symbolics's OpenGenera (proprietary, but source is available to 90% of the OS), or Movitz(BSD license) which is a baremetal Lisp implementation.

And how are you going to base it on the linux kernel? linux is written in C, and mixing too much C with Lisp kind of takes the fun out of making a pure Lisp OS, altough if you meant that you'll use the linux kernel as a reference, then that's fine.

As for you calling other OSes buggy, all major OSes are pretty stable these days (Linux, *BSD, NT(Windows' Kernel)). Some of them suffer from bloat and being grown to maintain compatibility, but that's what's needed in the real world.

Anyway, I wish you luck on your project and have fun!