Below is a demonstration of an opened hard drive that has had the lid removed and the Actuator (Magnet) Replaced on a clean desk that would have only been exposed for less than 3 minutes.
TIP: If for what ever reason you have taken the lid off your hard drive to investigate the clicking or strange noise: Use a can of Compressed air to quickly remove any contaminants prior to replacing the Top of the hard drive.
Its not so much that dust causes major Problems it’s things like dead skin that instantly sticks to the platter of the hard drive.
When it comes to file structures such as Mac HFS+ data is daisy chained and one bad sector can cause the rest of the chain to fall off with NO recollection of where it belongs.
Simple and small Data recovery lab Sample
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