Well, here is my instruction (English) on how to install Red Star OS 2.0 (Korean):That statement alone shows how much you do not know about operating systems, or what an operating system even is. Nice Googling.
Great Desktop Background
Nordkoreanisches Betriebssystem auf Linuxbasis: Red Star OS 2.0
Download links are probably broken due to download-depended file-storage.
I took this screenshot: