Aww, I had only sat down to try out Meego for myself today, and that was when I came across this thread. Hope that you didn't lose too much data! dd is one of those scary commands that doesn't ask you for confirmation or doesn't give you any indication of what it's doing until it's too late...

Anytime that you're writing anything directly to a block device, it's always good to triple check that you're pointed at the right target.

Regarding trying Meego, my opinion now is that unless you're doing development for it, there's really nothing of interest right now. Not that I want to discourage the OP from trying, but, it may not be worth your effort at this point in time. (Even Nitdroid seems more usable).