I’m actually typing right now from the ‘clone’ copy of my OS X in the other hard drive!
Carbon Copy Cloner rocks!!! Very very easy to do…very smooth!
I clone my OS X to the newer HD, boot from the other HD…and format the old HD…
I’m very surprised on how silence the newer HD is…the 10G HD is really loud!!!
i made an image of my OS X…and save it on my external HD…just for a backup…
to think about it, this is really really neat. for example, if the HD on my mac crashed and unrecoverable, i can simply buy a new HD…and restore my OS X into the new HD from disk image… very nice!