Thank you all for the quick replies to my question. I cloned the hdd because I got a OS message that it was about to fail. I didn't want to lose everything or go through a full reinstall of all programs on a new unit and without a NAS option I opted for the new hdd. I purchased the dv6 from Sam's with the extended warranty. It's due to expire in about 30 days. I can switch hdd's and return the unit to them and get a full refund on both the dv6 and the cost of the extended warranty. Then I'm free to buy another unit with the extended warranty. Since then the fan motor has started to surge and it runs hot which indicatest failure is ahead.