I just bought a new 160GB hard drive for my imac G3. I know that you have to format it to get the computer to recognize it but i don't know how you do this and when I try to insert my Mac OS X install disk it just comes up with installer and when I try to quit installer it only lets you restart. So my question is, how do you format a new hard drive (160GB) on an iMac g3 to get it to recognize it?