Ameet148 said:Hi
My friend opened his HDD for data recovery ....
err...fingerprint??CA50 said:^^ ask your friend to get a new one, even a small fingerprint on the HDD platter with become an issue during read-write operation, and thhat fellow have touched it and also cleaned it with tissue - which might leave unwanted residue.
Better askk him to wash it properly with water and use it for shaving, and get a new one for his system.
Platter surfaces have a mirror finish. Any contamination can render the contaminated area of the platter unreadable. The surface of the platter is especially succeptible to finger prints with even the slightest touch. That is why careful handling of a hard drive is critical during the recovery process, and all recovery work must be completed in a clean room environment.