What is Data Recovery? To start with,I will simply define this because of the newbies that may be reading this as an act of restoring the lost data from a faulty storage device by the data recovery experts.Now the fault caused to the storage device can be classed into viz- physical and logical which will further enhance the expert in restoring the data.To restore file from a device entails a number of techniques which the experts use in the process.Then what are the techniques use in restoring the data you may want to ask.Listed below are the techniques which I believe should help you in your quest.
1.Logical Data Recovery
This is the technique use in rebuilding any file corrupted or damaged by the user error or virus attack detected by the data recovery expert.Thus the hard drive would not be repaired but rebuilt because as you can see the hard drive is perfectly OK and the BIOS still recognizes the hard drive.
2.Fragmentation
This technique is useful in the case of smaller file size compared to a large cluster size.Thus in a situation where a file is lost in an accidental file deletion,formatting or partition that particularly block hard drive to become accessible.
3.Magnetic Force Microscopy
MFM is the latest technique that uses a sharp tip attached to a flexible cantilever placed close to the surface of the damaged device where it interacts with the stray magnetic field. While the tip is moving across the magnetic device, it is evaluated to detect the lost data. The technique turns out each track that contains an image of everything ever written to it, and finally recovers the lost data.
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