I have a 1-TB Western Digital MyBook Essential Edition 2.0, 7200rpm, 16MB Cache, and since I've got and plan to have loads of info stored on it, I wish to run a check every now and then just to be on the safe side about it. Last thing I want is to run it someday just to find out it has died on me. On my MBP menubar I have the SMART Reporter utility which informs me about my internal HD, and hence I'm relieved about that one, since I will be notified as soon as there's an error. What about my external HD though? How can I go about examining that one?