Hard Drive Technologies

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Different types of hard disk failure and methods used in data recovery : hard disk drive failure

June 11, 2014 Jon 0 Comments



Logical Hard Disk Failure

The first stage hard disk recovery process with logical damage or logical damage is to clone the danaged hard drive. to avoid further damage to the original hard disk. After making the bit by bit copy, The data recovery engineer will verify the copy.  Data Recovery Lab has  data recovery tools specially developed in our laboratory which are used to ensure maximum success in recovering data from a dmaged hard drive.

Damage to the Electrical Circuit – PCB

This type of damage prevents the proper functioning of the hard disk, sometimes shorted circuit-mail (sometimes you can emit a burnt smell is from the PCB), In this case, the hard disk does not spin and is completely dead. First the data recovery engineer has to examine the extent of damage. The PCB cannot be replaced and can only be repaired. This is because each PCB is specific to that particular hard drive. If you use the wrong PCB, you will damage the hard disk. This is because the wrong instructions will be given to the read/write heads and the motor.

Damages in HDA (Hard Disk Assembly) or Physical Failure

HDA is  inside the metal casing housing the read/write heads and the platters onto which data is written by magnetising the coating of the shiny disks inside. Generally speaking, recovering data from physically faulty hard drives is more complex and requires special dust-free environment (clean-room) and a very experienced data recovery surgeon to carry out temporary hard disk repairs using a donnor disk. When the hard disk is temporarily repaired, it is cloned so that clone can be used for a successful data recovery or data extraction. Hard disks with a physical fault, normally make a clicking or clunking noise and they must be turned off immediately to limit the damage. If the hard disk is inaccessible and makes a clicking or ticking noise, you must seek professional help and consult a data recovery technician.

Petros Smith is a senior data recovery specialist with Data Recovery Lab.

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