CD OS history (Comparable with Windows)

All the pictures I made by myself same as the startup and shutdown Sounds
And i work a lot on it :) hope you like it.
This is pure Fantasy btw.
One problem Cd was invented in 1983. But.. I had to change the name. First it calls RoundBall. now CD

TimeTable of CD history:
1981:
9 Dec 1981: RD released: RoundBall BW OS
1982:
27 May 1982: RoundBall BW 0.1 released
1983:
6 February 1983: RoundBall BW 0.2
18 november 1983: RoundBall BW 0.3
1984:
2 June 1984: RoundBall BW 0.4
9 October 1984: RoundBall Released Purple CD 0.5
RoundDisk changed the name in CD because It's looks like a CD.
1985:
16 January 1985: Purple CD 0.6
5 May 1985: Purple CD 0.6.5
19 December 1985: CD released NaSk 0.7
1986:
18 June 1986: NaSk CD 0.8
1987:
12 September 1987: NaSk CD 0.9
1988:
8 April 1988: CD released CD 1.0
15 July 1988: CD 1.1
13 november 1988: CD 1.2
1989:
7 March 1989: CD 1.3
4 April 1989: CD 1.4
19 September 1989: CD 1.5
1990:
7 April 1990: CD 1.6
1 July 1990: CD 1.7
9 December 1990: CD 1.8
1991:
7

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