Red Star OS

Background
Red Star OS (Korean: 붉은별) is a North Korean Linux distribution, with development first starting in 1998 at the Korea Computer Center (KCC).

Screen (2008)
Screen: Over a blurry /black background, we see the Red Star OS logo with the Korean text in white, and a stylized star in. The text "사용자용제계 1.0판" is shown in transparent below.

Technique: None.

Audio: Unknown.

Availability: This was used on the first version of Red Star OS. So far, no copies of it have surfaced online besides a few screenshots.

Screen (2009)
Screen: Over an abstract light blue background, we see the revamped Red Star OS logo, with the text now being in, and the design of the star being changed to include a wing-like streak. "사용자용제계 2.0판" is shown below in white.

Technique: None.

Audio:
 * Startup: A calm 5-note theme.
 * Shutdown: A 3-note piano theme.

Availability: It is seen on version 2.0 of the OS.

Screen (2012)
Screen: Over a gray background, we see the Red Star OS logo from before appear in the center. After a while, a loading circle (like in the macOS startup) appears below.

Technique: Computer animation.

Audio: None.

Availability: It is seen on version 3.0 of the OS.

Screen (2017)
Screen: On a dark background, we see the Red Star OS logo with a shine effect at the top of the star. A reflection is seen below, minus the shine effect.

Technique: Unknown.

Audio: Unknown.

Availability: It is seen on version 4.0 of the OS. Just like the first version of Red Star OS, no copies of it have surfaced online besides a few images.