On Monday, 30 March 2015 at 15:32:25 UTC, Columbus wrote:
"Is there usefull documentation about using D as OS language?"
I wrote briefly in my book some stuff that might help get you
started
https://www.packtpub.com/application-development/d-cookbook
Basically you can start with an empty runtime and then add back
missing functions as needed to get it to compile.
For your interest: At first, the OS should run on x86_64.
Though I did 32 bit, I haven't worked with 64 bit. Probably not
that much different though.