I want to install an SSD in my iMac. Most likely a 256, but I want to also keep in the stock 1TB hard drive. I know that there is an install kit that comes from the OWC but how do I exactly install the OS on the SSD? And afterwards do I uninstall the OS from the 1TB drive? Or do I leave it as is? I want to run programs and the OS from the SSD as most people do and just use the 1TB HDD as storage. I've never had multiple drives in a Mac before so I'm not sure how it works.