GameCube Service Disc Version 1.0/03
This is the disc that servicers were given so they could properly test the Nintendo GameCube system and accessories. The prompts given on the startup screen are self explanatory but just to make sure, Nintendo decided to add the instuctions onto the outer case. There were never any revisions made, so only Version 1.0/03 exists. However, after the Service Centers were disbanded, a hardware revision was made that makes this disc fail to boot up on the newer systems and gives the prompt that no disc is present. It is likely that Nintendo made this change to try and impede centers from continuing to service items for Nintendo customers, although I have no way to verify this.
There is a great in depth article on this Service Disc which can be found here!