Data recovery hard drive failure

Author: Muneer Mohammad

Hard drive: Introduction

Hard drives are used to store information. All information is stored on computers in the archives. Hard disks store the majority of information in modern computers. Hard disk drives (HDD) can be seriously damaged by static electricity, shocks, and other factors, often resulting in failure or loss of valuable data. In many cases it may be necessary to retrieve information from your hard drive. Recovery is very possible.

Hard disk failure

* Physical Failures

Sudden failure of the physical stop, power failure, away from desks Slip and cheap components. About the loss of data, the data is only magnetic impulses on the surface of a disk drive. And ridiculously small pieces of the magnetic l '! When the magnetic pulse disappear or change position, the difficulty begins.

Unit derived from the alignment is another cause problems. Devices are subject to mechanical wear, heat and cold, loosening tolerances etc.

Small changes in the read heads de / Writing is not usually matter, although the data are recorded in the same place that will be read later. However, few data are almost never re-writing and this is the ID header.

* Logical Failures

* Default Master Boot Record
Technically, when the Master Boot Record is correct then master boot code scans the partition table of the active partition is the boot sector, load a copy of the boot partition active memory and then transfers control to the executable in the boot sector. If the master boot code can not perform these functions, the system displays a message similar to the MBR error.

* The boot sector Failure
The boot sector is a region of a hard disk, diskettes and other data storage devices. Is loaded into memory and executed on the boot sequence. The boot sector contains a small program that loads the OS into memory and transfers control.

Most boot sector failure by the defection of boot sector virus. Boot sector viruses are usually spread by infected floppy disks. In the past, these boot disks are usually, but this is no longer the case. A floppy disk does not need to be bootable to transmit a boot virus. Any disk can cause infection if is in the drive when the computer starts or stops.

* Accidentally deleted data
At some point in some way you delete a file, in May could not believe that we need more, but in a week or two, you realize that May is a necessity. Happens to the best of us, but fortunately there are ways to get these lost files.

When it comes to data on your computer, it is almost impossible to accidentally erase beyond recovery. Even if you are intentionally trying to completely clean a file on your hard disk, it is very difficult.

* Cross Linked Files
A file system error that corrupts the contents of an existing file for writing data from another file in the same group. Run Scandisk or a similar program clears the problem, but one of the files are no longer usable.

* Bad Sectors
Is a of hard disk that can not be used more. If a disk is bad, which contains the sector data, the data are to be recovered before use. When you format a disk, operating system will mark all the unusable sector bad sector, however, this does not affect the overall performance of disk space is considered unusable damaged.

Hard Drive Data Recovery

* Replace the (circuit board) PCB
In a circuit failure of the unit, it is possible to recover the data with care by replacing the PCB of the hard disk.

* Replace the Firmware
Hard drive firmware is the information that is used by the team that allows you to interact properly with the hard disk. Or days can be replaced by the corresponding firmware.

* Replace the Head Stack
There are situations that Lead may be due to failures. There is a small chip in his head that the battery is called a preamplifier. Preamplifiers always working with some difficulty because that almost can not bear not discharge. If re-soldering is required, you should follow certain rules designed to protect a preamplifier Damage caused by careless finger touching. While this task is very risky and should be done in a safe laboratory created especially for this task.

* Move hard drive to another
In some cases, the functionality of the unit is turned off in May, while the internal drive is flat, without damage or errors. In these situations, You can move the unit to another unit.

* Spin-Stand Testers
Hard drive of your head and makes the media read channel preamplifier and suppliers very specific, very expensive "magic machines" Spin-Stands. Used for testing and experimenting with heads and disks. They are mainly used by departments research and development.

* Magnetic Force Microscope (MFM)
Magnetic force microscopy is a powerful tool for high resolution Image Most of the magnetic media data storage. As the density of magnetic media is higher, becomes the smallest piece that the wavelength of light, optical techniques can not solve. MFM is capable of general images of the magnetic field of several tens of nanometers. Moreover, MFM is almost simultaneous measurement of surface features of the topography and roughness in the same area, with sub-Angstrom vertical resolution.

Software Recovery

Spinrite 6.0 *
Spinrite is a stand-alone DOS program to refurbish hard drives, floppy disks and recover data from marginally or completely unreadable hard drives and floppy disks and partitions and folders which have become illegible.

* The software Ontrack Data Recovery
Ontrack Recovery Data offers the industry's highest quality and cost, do-it-yourself software solutions for data recovery for almost any situation loss of data on servers, desktops or laptops for all media, operating systems and file types. Ontrack EasyRecoveryTM family product is unique in its ability to recover and / or repair all causes of data loss.

* Recover My Files
Recover My Files software Recovery easily recover data files emptied from the Windows Recycle Bin or lost due to the format or corruption of a hard disk drive, the viruses or Trojan horses, and stop or an unexpected system failure.

To retrieve the most sensitive information http://www.pc4safe.com

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