Need some help here re: dvd-r backups

[kingforlife]

Hello Charlie how ya doin man....?
anyways wanted some info on a small problem im having playing ps2 dvd- backup..


I got these ps2 dvd back ups sent to me via mail, and I cant get them to play at all on my ps2....

Just to let u know this is what I have currently on my ps2 ....
Keep in mind I Have been using these methods for the past year or so.....


I have ps2 latest version, I use the credit/card method to boot games... I dont have a chip installed... And I use the gameshark v 1.9 to boot all my cd-r's.Everything boots fine on my ps2, I have over 60 games that i have burned.... and ive had no problem using this method plus the gameshark to boot these games...Anyhow this is the first dvd-r back up that ive tried playing with and it doesnt work at all....Ive heard conflicting stories that say the knife/credit card/cog method will not boot dvd-r's without a chip....

On the other hand ive heard that the credit card method with no chip and using a gameshark v 1.9 will boot dvd-r backups, but thyre is some type of steps involved??????


Anyhow just wanted to know if thyres anyways i can get this dvd-r back up to boot with all that I have and adding no mod chip.

thanks for the help...