Im having trouble with my iMac the last few days....the horrible white screen! I was able, through trial and error, to get it to boot and seems to be working ok. But each time I restart it, the white screen shows up again. Anyway, Ive had SuperDuper installed on my iMac for quite some time, just in case of an emergency. Yesterday, I tried to restore the SD clone back to my iMac HDD. It wouldn't give me the option to do so. Is there any advice anyone can give me?