Hard Disk: An Introduction

Hard drives used to store information. All information is stored in computer files. Hard disks store more data on modern computers. Hard drives (HDD) critically damaged by static electricity, shock and other factors, which often results in lack or loss of valuable information. In many cases you need to recover data from hard disk. This recovery is very possible.

HardDisk Failure

* Errors Physics

physical damage from a crash, power failure, sliding them off desks and cheap components. With respect to any loss of data is only magnetic impulses on the surface of a disc. And ridiculously small bits of magnetism at that! When the magnetic pulses fade, or change position, the problems begin.

Drive Alignment Drift is another cause of problems. mechanical devices are subject to wear, heat and cold, loosentolerances, etc.

Small variations of read / write heads generally do not care if the data is still read in the same position later. There are some details that almost never written, and Sector-ID headers.

* Error logical

Not the Master Boot Record

Technically, when the Master Boot Record is working properly, the master boot code scans the partition table for the active partition, the beginning of the field, get a copy ofthe active partition boot sector into memory and then transfer control to the executable code in the boot sector. If the master boot code can not perform these functions, the system displays an error message similar to the MBR.

* Boot Sector Failure

The boot sector is a region of a disk drive, floppy disk, storage medium and the like. The memory is loaded and executed as part of the bootstrap sequence. The boot sector contains a small computer programloading the operating system into memory and transfer control.

Most boot sector failure of the waiver of boot sector viruses. Boot sector viruses are usually spread via infected floppy. In the past it used to boot disks, but is no longer the case. A boot floppy must not be a boot virus transmission. Each disc can cause infection if the drive when the computer is started or closed.

* Accidentally deleted data

Sometime to think about how you can be a file is not removed? t is no longer necessary, but in a week or two, or you can understand that this is a must. It happens to the best of us, but fortunately there are ways around this lost files.

When it comes to data on your computer, it is almost impossible to remove the case without recovery. Even if you are deliberately trying to completely destroy a file from your hard disk, it is very difficult.

* Cross-linked files

A filesystem errors that destroy the contents of an existing file by writing data from another file in the same cluster. Running ScanDisk or a similar problem treatment program, but one of the files are no longer usable.

* Bad sectors

Part of the hard disk that can not be used. As part of the hard disk bad sector containing the data to obtain the data to retrieve for use. If you have a disk format, operating system, all brands like bad sectors unusableHowever, no effect on the overall performance of the damaged disk as space is considered unusable.

Hard Disk Data Recovery

* Replace the (Circuit Board) PCB

On a difficult track, you can retrieve the data, replacing PCB disk concerns.

* Replace the Firmware

firmware of the hard drive is information that the computer can properly communicate with the hard drive used. It can be replaced orupdated the firmware later.

* Replace the Head Stack

There are common situations that can cause significant errors. There is a small chip stack called head preamplifier. Working with preamplifiers always includes some difficulties, because in practice, can not resist static electricity. If re-welding is necessary, a man who a few lines of a preamplifier for protection against damage caused by static electricity by touching a finger absently. Although thisThe job is very risky and should be in a high security laboratory specifically for this task.

* The disk in another drive

In some cases, functionality, full hard drive can be removed and only the disc tray inside, no damage or defects. In these cases you can drive to switch to another station.

* Spin-Stand Tester

Hard disk and head are made of media and read very carefully preamplifier channel suppliers to make veryexpensive "magic machines" called Spin-Stands. It 'used for testing and experimenting with heads and disks. They are mostly used by the researcher and development departments.

* Magnetic Force Microscopy (MFM)

magnetic force microscopy is a powerful tool for high-resolution images of magnetic storage media more. Since the density of magnetic media is higher, the techniques may slightly smaller than the wavelength of light, so optical not solve the problem. General MFM canimages of the magnetic field of several tens of nanometers. Also, MFM is almost simultaneous with the measurement of surface characteristics of topography and roughness of the same area with sub-Angstrom vertical resolution.

Recovery Software

* SpinRite 6.0

SpinRite is a stand-alone DOS, hard drive, floppy disk and restore the data to be restored or completely unreadable hard drives and some floppy disks and the walls and folders that wereconfused.

* Ontrack Data Recovery Software

Kroll Ontrack offers the highest quality and most profitable sector of the do-it-yourself data recovery software for almost all situations where the systems loss of data servers, desktops and laptops for all media, operating and file formats. EasyRecoveryTM Kroll family of products is unique in its ability to recover / repair from all causes of data loss.

* Recover My Files

Recover My Files data recovery softwareeasily recover deleted files emptied the Recycle Bin or lost due to the format or corruption of a hard drive, virus or Trojan infection, unexpected system shutdown or software does not.

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