I was wondering if it is possible to install a second hard drive on my mac or replace the other one? Also i was wondering where could i buy the right hard drives?
The G5 has two hard drive bays, one is obviously already used. As far as adding another drive, just go to wherever hard drives are sold and buy a Serial ATA (SATA) drive and either have them install it or do it yourself. Just make sure it is a serial ATA drive.