While the freezer trick can be useful, I want to point out to those not fully in the know, that it is for getting around minor physical damage (warping from age, overheating, etc) so it should be used after step 5 above does not work. As well, if your data is so important that you would be willing to take it to a professional recovery service and spend $700+ then you may not want to do the freezer trick as it could damage your data further. But if you don't have the money (like me) then it can be a good last ditch effort!