I have purchased a secondhand Imac (Intel) which was working perfectly until I used Migration Assistant and transferred al the files from my previous Emac. This has now given me some problems i.e Mail will not work, even after doing a custom install. Therefore I would like to start from scratch and do a new install deleting all files on Hard drive at the same time. When I load the Install disc and click on the Install icon it prompts a restart, which it does, but when restarting it ejects the Install disk and just restarts back to normal. I have tried restarting holding down the C key and also choosing the Install disk as the start up disk both with no avail. Any help would be very much appreciated.