I have 160 gig hd with two partitions, one I'm using for general web browsing and the second I have my marine charting software which is registered which also was fairly expensive. Over the years and a few crashed hard drives/laptops I only get 3 registrations and I'm on my last. My laptop is running fine but I would like to preserve this final copy so my question is if I buy an identical hard drive can I clone this new hard drive and will it work on this same laptop for use if this hd ever crashes. Many thanks for any suggestions.