I have a major question!!!!!About burning multiple disc games!!!

I was wondering if you have to apply the patch to each disc in a series of 4? Im burning legend of the dragoon and it has four discs and a patch was made for it and I applied it to to the first disc and it works fine!!! But I was wondering if I have to apply it to all of the discs?

usually if you have to apply to more than one disc it will have seperate patches for each disc so if it only had one then chances are that u only need to patch one disc