I bought way back lineage2 the chaotic chornicle. My hard drive died and I had to get a new one. Do I have to let that one update through the auto update or can I get a differnt game client and use the same code?
Best and fastest mirror I know off is gamepsot, you need to register there but the free accont is just fine, and if you got a download manager you can resume and so fort whenever you want.
AFAIK there is no need to enter game code anywhere except on the NCsoft website under account management. So you can get any (unmodified!) L2 client from anywhere to anywhere and just login with your name and password.
You do not even need to install the game, just copy it, run and do fullcheck. If you have possibility to bring it from some nearby friend's house it's even better and faster sometimes :)