Data Recovery Blog

A very common flaw is disruption of protective diode along the +12V circuit and resulting outage of the computer power supply unit. In that case the external look of that component does not allow identification of the damage, because its case remains unaffected. An attempt to connect a drive so damaged to an operable power supply for diagnostics will most likely result in breakdown of the latter. Therefore if such a drive is brought for repair then first of all you should probe the 0 and +12 V circuit with a regular tester to check for a short circuit.

The protective diode originally designed using the “transil” technology at SGS Thomson is intended for protection of electronic circuitry from short power supply peaks not greater than 10 – 20 microseconds. But in that case their common failures demonstrate that HDD designers did not expect to encounter so poor quality of power supply units. Thus drive operation can be resumed after simple removal of that damaged element from its circuits but we cannot guarantee flawless HDD operation without that component.

Data Recovery Cases

WD hard drive open data recovery WD3200AAKS75L9A0

DATARECOVERYUNION.COM3 years ago01 mins

Case:WD 320G hard disk model WD3200AAKS-75L9A0 hard disk has been fell, and after more than ten power increase operations.100G data, document, picture, material information 100%successfully tested by engineers. Due to the falling from a high place, the hard disk caused the hard disk magnetic head to deform and damage. Then the hard disk magnetic head…

Hard Disk PCB Boards

2060-771852-004 WD PCB Circuit Board

DATARECOVERYUNION.COM7 years ago5 years ago03 mins

HDD Printed circuit board (PCB) with board number 2060-771852-004 is usually used on these Western Digital hard disk drives: WD5000LPVT-08G33T1, DCM HHCVJHBB, Western Digital 500GB SATA 2.5 Hard Drive; WD5000LPVT-00G33T0, DCM HHCVJAN, Western Digital 500GB SATA 2.5 Hard Drive; WD2500LPVT-00G33T0, DCM HHCVJHB, Western Digital 250GB SATA 2.5 Hard Drive The 2060-771852-004 Western Digital PCB repair…

Data Recovery Cases

Toshiba hard drive physical bad sectors repaired successfully

DATARECOVERYUNION.COM3 years ago02 mins

Case:The customer’s desktop 500G Toshiba hard disk. Recently, when the computer was opened, the hard disk read was slow, and the files also appeared sometimes to open and sometimes could not be opened.An important data needs to be recovered, contacting our company for help. Solution:The engineer used professional equipment to detect, and the hard disk…

Data Recovery Cases

A company’s ERP database repair

DATARECOVERYUNION.COM3 years ago02 mins

Case:The remote client of the client server cannot be accessed normally. The network management immediately logs in to the server remotely and found that the server restarting phenomenon and the existing loss of the database.As a result, existing clients cannot be accessed normally.By looking for the existing database position, the network management found that the…

Data Recovery Cases

HP Tower Server RAID5 System Recovery Successfully

DATARECOVERYUNION.COM4 years ago01 mins

Case:This is a long -term cooperation. It cooperates with many units and has its own office. The server RAID 5 cannot be opened. There are important data in it. Solution:Saying good time at night, the data recovery company’s Deng Gong came to the door after testing, and found that the problem was relatively simple. There…

Data Recovery Cases

Data recovery Golden State company Buffalo 1TB mobile hard drive

DATARECOVERYUNION.COM3 years ago01 mins

Case:This is the use of Bahaluo 1TB mobile hard disk, which is used by financial personnel. The data is very important. The company’s maintenance personnel display the hard disk to any computer and display the RAW format. Solution:For this kind of failure, we have to deal with many processing, rich experience, and directly extract the…

Computer FAQs

Selecting whole word using keyboard only

DATARECOVERYUNION.COM4 years ago02 mins

Suppose that I’m writing some text and the caret is in the middle of a word. I would like to be able to select that word without using my mouse. (Using the mouse, simply double-click on the word.) I have found the following, but it’s kind of clunky: Ctrl + &leftarrow;: to go to the…

Computer FAQs

Python – python3-pip installed but pip3 command not found?

DATARECOVERYUNION.COM4 years ago06 mins

I am testing a Python3 program in several computers. To do that, I need to install a library of Python with pip3. So first, I was installing python3-pip in each computer (everyone is running Kubuntu OS). Everything was OK, and then I installed the package I needed with pip3, and I managed to do that…

Hard Disk Repair

How does HDD store data?

DATARECOVERYUNION.COM15 years ago5 years ago02 mins

Hard disk drives store data on one or more metal oxide platters. These platters spin at a rate of 3600-10,000 revolutions/minute, hold magnetic charges. A read-write head attached to an actuator arm actually floats on a cushion of air, 1-2 micro-inches (one millionth of an inch) above the surface of the platters. Data flows to and from these heads via electrical connections. Any force alters this process may cause data loss.

Ten years ago hard drives stored 40 Megabytes (MB) of data. Today’s hard drives store data up to 2000 gigabytes (GB) on a smaller surface. Increasing storage capacities amplify the impact of data loss. As more and more data is stored in smaller and denser areas, mechanical precision becomes crucial.

As a part of this advancing technology, the drive tolerance (distance between the read/write head and the platter where data is stored) is steadily decreasing. A slight nudge, an unstable power surge or a dust introduced into the drive may cause the head to touch the platter, resulting in a head crash, PCB burnt, bad sectors, etc. In some situations, the data residing in the area touched by the head may be permanently destroyed.

The current tolerance drives is 1-2 micro-inches (millionths of an inch). Comparatively, a speck of dust is 4-8 micro-inches and human hair 10 micro-inches. These sizes contaminants can cause serious data damage.