How to recover data lost due to physical damage

Physical damage to the storing devices can occur due to different sorts of failure and in most of the cases it is very difficult to get over them. There is a metallic layer present over the hard disks, CD ROMs and any deterioration to this metallic layer can cause physical damages, and you can easily loose the data. There is also a dye layer present over the disks and if this dye layer scratches off you can easily lose your precious data. Many mechanical failures can causes physical damage as well and it includes head scratches or the tapes of the disks can simply break down. You might not...