Because the 12" Powerbooks uses Nvidia GPU they are a bit more complicated than the 15" and 17" with ATI/AMD. But it can be done. During the 6 years it was my main computer back in the days it was popular to run OpenBSD on them.
Though I plan to use #macports to compile/install a modern *nix ecosystem onto #OSX 10.5 Leopard. WIth a modern GCC, OpenSSL, OpenSSH, Rust, Python etc.
There's a modern browser #Powerfox that works great.


