I gave my G4 Mac Mini to my mother. Soon after, the HD died. I took it to an apple authorized repair center and had it replaced with apple care for free. They gave the system back with no OS on it. Today I got a copy of Tiger and turned the computer on for the first time. I tried to install TIger from the disk, but when it gets to which volume I want to install it in, there are no options. I restarted several times and there is always nothing. Could anyone help please?