Alcohol 52%. Make an image of each disk and you can store it as your backup. Save it as an ISO image. To burn it you'll need to look for a free ISO burner, DiskJuggler is good and has a fully functional free trial.
why copy it? install it then use disc one to play. just copy that one. the others are just needed to install. alcohol 120% is a better version. i think it's a combination of two previous alcohols with a two figure number followed by a % sign
