I have a burned HDDLoader in a CD-R and loads fine on my PS2 but it won't lead on my friends PS2 (be both have DUOSE chips), both version 7 Ps2s. The disk runs fine on my system but it won't load on his (his system runs game and movie backups with no problems). I have tried burning it with differen medias but can't get it to work on his, could this be the laser or is there a connectio on the modchip that controls cd-r/rw media?