Excuse my ignorance...whats the point of making backup cd's of PSX2 if they dont run on your con

[jonnygee]

Sorry for being thick but i have been advised on this forum to make a backup of my PSX2 disc's by using , CDRWIN,
Well i did and the disc will not run on my PSX2 console.
Then i am told it wont?
Can somebody please tell me why , and make it clear as to why not?
I know to run backup cd's on a PSX1 you need it chipped, is this the same for PSX2?
Thankyou.