Plz need help ive GTA IV Original disc 1 and 2 for pc but disc 1 is scrached and i need to copy the disc 1 ?

When i try too oppen the game to play in the moment the game get crashed bc disc 1 is to schached and now i need to know what to do plz to copy the original disc or to play bc i want to play lcpdfr and this mod cant be played withot original game :/ plz help