Basic Consideration while Physical Hard Disk Failure:• You should never open a failed hard drive to attempt repairing damaged internals or recovering lost data. • A hard disk with failing or failed read/write heads or actuator produces unusual sounds like clicking, scratching and grinding sounds. It usually indicates that head is trying to make contact with disk platters. Thus, you should immediately turn off the system. • Most of the modern hard drives have installed a pre-warning system (for e