I have a imac Intel i3 single core, 8gbs ram, Im having issue installing Snow Leopard.... I can't get the install disc to boot up... I've tried with the original hardware. And no luck. I replaced the hard drive with a new crucial 250gb ssd. And 2- 4gb ram new I have also tried using a clean unformatted hdd I've tried booting off a usb stick. If I start from the cd, if I try running the disk it just does the same thin 12 hours straight every time. Nothing. No beach ball. I also have 2 copies of snow Leopard.