I hope somebody will help me. I have iMac G3 Flower Power. 500MHz,512MB,20GB HD. I wanted to install 40GB hard drive and upgrade OS. 1) I replaces Hard Drive, 2) Booted from exernal HD with OSX 10.4. 3) Held Option key while booting. 4) on screen I got an icon of external HD with OSX. 5) I clicked to install. 6) erased 7) When it said - select destination disc - there was nothing. So, I was not able to install OSx. What step did I miss ? Can somebody help ? Thanks !