How to copy PSX2

[xa4]

Hi,

Can someone give me info on how to copy PSX games.
I was told thatcI can copy the games using NERO.

But on the dvd their is like 2 GB, while I can only put 750MB on the cd-rom.

I saw that one of the files on the dvd was 1.3 GB big.
Is this placed here to prevent the copying?

Please help me

Thanks in advance
xa4