FS2004 installation CD4

After full installation of FS2004 it seems I have to keep CD4 in the DVD player, when I start FS2004. Is it possible to bypass this procedure? All is on HD and registered. What if CD4 becomes damaged for some reason.
--> I want to install all of FS2004 on the PC, without the need of using the original CD4 or better without CD4 of FS2004. Is this possible and how ?
--> I want to install all of FS2004 on the PC, without the need of using the original CD4 or better without CD4 of FS2004. Is this possible and how ?