ok so answer me this. if i was to attempt to copy my mac hd to an externally attached computer using the exact config that you have in that screenshot - would it allow me to do so? you have booted from the drive that you want to copy to the external. i thought you couldnt completely copy everything from a drive that was booted, is my question.
I don't see why not... but I haven't tried that one yet. I heard you can though. I personally use Carbon Copy Cloner, it's easy and simple.