Theres NO WAY of installing PIRATED copies of FFXI in the PS2 or PS3 period.
Because of Dynamic Network Authentication System (DNAS) the console is scanned for modifications, the Hard Disk drive is probed for being of the right type required by the game and the disc is SERIALIZED with unique IDs per copy. It's just to make sure nobody will:
Install playonline and related software from illegal copies
Install on more than a certain number of machines
Use an not official hard disk drive
Use the same hard disk drive in more than one PS2 unit at a given time
Expansions are affected by the same rules. And remember that if you have no CoP and/or WoG you can't use Abyssea expansions.
If you don't have RoZ and (I think)ToAU you can't use ACP/AMKE/ASA as well. Regardless of having them active on your account, not having the data on the console will prevent them from being usable.