i think u are talking about the "independence exploit "u need....
1-network adapter
2-ide hard drive (compatible) pref maxtor brand
3-memory card for ps2
4 codebreaker
5-usb flash drive
6-any ps1 game (trigger disk)
7-hdloader elf files..
these are the things i used and now i can play back up iso from hdd.....kinda takes time to do but it is very much worth it!!!
NO MODCHIP
NO SWAP MAGIK
DONT NEED TO OPEN YOUR PS2
http://www.exploitstation.com/articl...er_exploit.php