Western Digital notebook hard drive can not start data recovery
Media Information: Hard Drive Brand: Western Digital Capacity: 250GB Model: WD2500BEKT
Figure 1, the hard drive that has been opened
Customer Name: Ms. Li, Chief Financial Officer of a company
Fault description:
When the computer was turned on, the operating system could not be started. It was thought that the computer was broken. A computer repair company in Zhongguancun Electronic City was repaired. The hard disk head of the manufacturer was damaged. The data was recovered and the head was replaced. However, the data recovery failed.
Data recovery process:
1. Since the hard disk has already been opened for data recovery operation, the hard disk cannot be detected by the device power-on to avoid secondary damage. We directly open the disk for testing. After the disk is opened, no obvious damage marks are found, and the disk surface is not scratched. Traces, as long as there is no scar on the disk surface, re-match the head, and clean the disk, there is a certain hope for data recovery.
2, Darth hard disk data recovery senior engineers first need to replace the good magnetic head, after finding the matching magnetic head in the spare parts library, open the hard disk in the 100-level clean room, replace the prepared good head with the disk that needs to recover data, and then Install all parts and seal the plate.
3. The engineer hangs the hard disk on the Dass special recovery machine and finds that the sound of the hard disk is normal, but the hard disk is in an unrecognized state. It is estimated that this is also the reason why the previous data recovery company did not succeed. The firmware of the hard disk through the Dass special machine. The area was tested and found that many modules on the hard disk were damaged. The engineer repaired the important modules. After the hard disk can be recognized and read and written normally, the cloned work data was basically restored after dozens of hours.
Figure 2, Da Si's second opening data recovery success
Data recovery results: Insufficient damage to individual files due to bad sectors due to excessive bad sectors on the hard disk. Data recovery was 99% successful.
Difficulties in data recovery: This case requires engineers to have an in-depth understanding of the firmware module structure of Western Digital and its ability to repair.
Advice to customers:
Regularly use the hard disk to back up important data regularly, sometimes the data is suddenly lost without precautions. When it is found that the medium is abnormal, it is necessary to reduce the power supply to the medium. Data loss The first time to find a professional formal data recovery company to do data recovery, so as not to cause significant loss of data permanent loss.
Darth data recovery, specializing in high-hard disk, raid server data recovery, Beijing data recovery professional brand.
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