Do most PS2 games need patches??

[A.C]

I have recently bought a PS2 and would like to know how to make a backup of my games.

[ckc]

firstly your ps2 needs to be chipped neo2/ar2 or similar,for pal uk,most of the games will work without cracks,ea titles need a swop crack,but this depends on what chip you have in your ps2