I ordered the OWC data doubler, and OWC 120GB SSD for my 2011 MBP. Im very excited Here is my plan on how I am going to go about with my set up. I'm fairly new to the mac world. I am going to install the old spinning hard drive into my data doubler, and have the SSD installed in the actual hard drive slot. Im going to boot from my old spinning drive and use carbon copy to transfer the data (not user folder) over to the ssd. Then delete everything from the old drive. My first question is, will my mac throw a fit about booting from the spinning drive when its on a different sata port? If so will holding option give me a menu to select it? Will everything work alright by just leaving the user folder on the spinning drive, and going into settings and have it point to that drive for the user folder? Any other tips? Thanks!