How do Imake backup's for PS2 games

[girldog44]

I just got a used PS2 and about 7 games, but some of them are in rough shape,scrached,scufed ect. They still work, but I would like to make copys in case they quit working.
Could someone please link me to how it has to be done.
I burns two in my CD-RW and they will play on my computer PS2 Emulator, but not in my PS2, it just tells me to install disk, when it's already in.
I'm new to this and this site so please excuse me if this is covered here at the site someware. Thanks.