Hard Drive Data Recovery after Physical Damage

Hard Drive Data Recovery after Physical DamageA wide variety of failures can cause physical damage to hard drives.  HDD can suffer any of several mechanical failures, such as head crashes and failed motors. Most physical damage cannot be repaired by end users. For example, opening a hard disk drive in a normal environment can allow airborne dust to settle on the platter and become caught between the platter and the read/write head, causing new head crashes that further damage the platter and thus compromise the recovery process. Furthermore, end users generally do not have the hardware or technical expertise required to make these repairs. Consequently, costly data recovery companies are often employed to salvage important data.

A hard drive can fail in many ways, caused by various reasons.

  • Logic board (controller) failures.
  • Moving parts failures.
  • Firmware corruption

How to determine a physical hard drive failed?
The hard drive is most likely physically damaged, and may be beyond the software repair capabilities, if any of the following symptoms is evident

  • There is a problem apparent on the exterior of the drive, like visible damage to the chips and/or connectors.
  • The drive is not listed in Widows Disk Management, Windows Device Manager, and in the system BIOS.
  • The drive remains silent (no spin-up sound, no movement/vibration felt) when powered up.
  • The drive emits loud clicking noise when accessed. Typical pattern would be repetition of click-pause-click-pause-click, followed by the sound of the drive stopping and then spinning up again. Windows typically locks up or feels “sluggish” for the entire duration of the sequence.

Physical Damage Recovery techniques
Recovering data from physically damaged hardware can involve multiple techniques. Some damage can be repaired by replacing parts in the hard disk. This alone may make the disk usable, but there may still be logical damage. A specialized disk-imaging procedure is used to recover every readable bit from the surface. Once this image is acquired and saved on a reliable medium, the image can be safely analysed for logical damage and will possibly allow for much of the original file system to be reconstructed.

Hardware repair
Media that has suffered a catastrophic electronic failure requires data recovery in order to salvage its contents. Examples of physical recovery procedures are: removing a damaged PCB (printed circuit board) and replacing it with a matching PCB from a healthy drive, performing a live PCB swap (in which the System Area of the HDD is damaged on the target drive which is then instead read from the donor drive, the PCB then disconnected while still under power and transferred to the target drive), read/write head assembly with matching parts from a healthy drive, removing the hard disk platters from the original damaged drive and installing them into a healthy drive, and often a combination of all of these procedures. Some data recovery companies have procedures that are highly technical in nature and are not recommended for an untrained individual. Many of these procedures will void the manufacturer’s warranty.

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Why Data Recovery is Necessary

If you have lost files on a desktop computer or a laptop, data recovery may be your only option in terms of retrieving all of the information lost on your system. Unless you are an expert as such things and have the right equipment, you probably have to leave it to the experts. As mentioned earlier, the software applications that handle various recovery methods are not always equipped to handle the hefty job ahead of you. Instead of running the risk of creating more damage and running programs that you are unfamiliar with, you should consider contacting a data recovery expert to assist you with your urgent computer issues.How are files on a computer lost in the first place? First, human error is the biggest cause of computer issues. Next in line to human error, are all of the dangerous computer viruses, Trojans, worms, and spyware that can clog up a computer system and in some cases, make the computer not work at all. Of course, there are preventive measures that a computer user can take in order to protect their computer systems; antivirus software protection and spyware removal tools are highly recommended to every computer user. Yet, it is a fact, that some viruses are devised so that they can get around the use an antivirus application. In fact, there are viruses that have been created that download their own updates every time the computer user signs on to the Internet. Such viruses are not only cleverly installed they are equally difficult to remove. Hence, data recovery measures become necessary.

Alternatively, sometimes computers are damaged during floods, fires, and other natural disasters. In some instances, it may be possible to retrieve some or all of the lost data if the computer is sent to an expert in data recovery. Consequently, a major loss of property due to unforeseen acts of God, does not have to mean that the computer owner has to also be stressed out over lost computer files and information.

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iPhone 2.2 firmware details

Apple has given developers a taste of the new iPhone firmware, version 2.2 beta 2, and it includes a host of spiffy new features that are making the rounds online.

A tipster shared with us some screenshots of the new firmware, including what appears to be the ability to download podcasts directly to your iPhone (and presumably your iPod touch). This could tidily explain why Apple rejected the Podcaster app last month. The option to “get more episodes” doesn’t appear to work in this firmware build, however.

MacRumors’ Arnold Kim links to an iPhoneHellas.gr screenshot showing the iPhone software asking for a rating before you delete an application. Kim speculates Apple is looking to increase participation in the App Store rating process.

Om Malik’s Apple Blog is showing off screenshots from the iPhoneYap.com message boards, including new Maps functionality. Google Street View will apparently be available by rotating the device into landscape mode. Public transportation support and directions for walking also seem to be included.

In the same report, the Apple Blog’s David Appleyard also mentions location sharing via email and SDK support for manipulating line-in audio as part of the seed.

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