Masking ps2 backups with a Sony DRU-510a dvdr drive

Hi, I am trying to make back ups of ps2 games with my Sony DRU-510a but I can't, when they load in my ps2 system they only get to the part where it said "playstation 2" and I think wow is comming but no it doesn't. The only game that goes a little bit more is fifa 2004, I get to see the fifa 2004 image.
I have also a hp dvd burner and I have no problem with it.
I am using alcohol, dvd decripter, stomp record now max.
I am using verbatim, tdk media, princo, both - and +.
Is there any new issues with my burner that it can't burn ps2 games?.
My dvd burner is slave in the second ide and the master is a cd burner, but I am sure this is ok.
i updated my firmeware but still the same.
My ps2 can read both - and + dvds.
maybe this is silly but I got to the point that I am thinking that maybe because my burner is a sony and ps2 is a sony too some how it won't let me.
Any help will be great.
 
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