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Data Recovery from the WD20EFRX-68AX9N0 Disk

T oday we have a guest WD20EFRX-68AX9N0 after careful transportation to new office location. Or one more proof of the truth of cloud technologies vs admin remembers, he will decide!

What was the problem, according to the client, and what files did we need to get?

This drive was installed 2 years ago, to replace the WD Caviar Green 2 TB. I remembered this model because the admin said that red would be better than green. Well, better - let it be worth it. Now the truth has broken again in less time.
File system
Documents: pdf, word, excel
When moving to new office, the computer crashed on its side. I think it was the beginning of the end!

The process of recovering data from a disk WD20EFRX-68AX9N0

A s usual, this happens, but no one paid attention to the fall. And if he did, then he probably waved his hand. The disk, as the gentleman should do, continued to work until he was allowed to disconnect - that is, until the reboot. And now back, he was not in a hurry to return - the system successfully booted (it was on ssd disk) and even the disk was displayed in Windows Explorer, but with the slightest access to folders on the disk, it hung up OS. Whether TLER (Time-Limited Error Recovery) ran here, I will not be able to tell you. But a random kick - quite! Yes, and successful attempts by a person to solve the problem could add oil to the fire....

HDD Diagnostics WD20EFRX-68AX9N0

A nd so, before our eyes, the hard drive Western Digital WD20EFRX-68AX9N0, of the Diablo3D family. Which unexpectedly ceased to be determined after an impact, and then a day of picking - hdd regenerator, victoria utilities. We started the drive inspection with a visit to the laminar box. Diagnostics didn't show serious defects, only a couple of small dust particles on the surface of the head 0, which would be difficult to attribute to the traces of the protective polymer. To the next question, about unusual sounds, he also could not give a complete answer, since testing was carried out without his participation.
So the patient's block of magnetic head was returned to the place previously treated for contamination, which could interfere with further diagnosis. But we didn't have to wait long time, when the power was supplied, the drive hung firmly in bsy. As it turned out later, on the 0 head, the drive practically could not read. And when accessing some modules - it falls into a knock. For this reason, we had to exclude the 0 head and continue working with the drive, only one copy of the service area.

S ince the client initially ruled out replacing the block of magnetic heads, we had to work with what was left. In addition to the problem 0 head, the drive has large sections with bad sectors by 2 head. All this in a cube, gave terrible prospects, both for the result of the proofreading and for the terms. And the chances of overgrowning the scratches on the surface of the platter, with the advent of new flakes on the surface of 0 head, were very out of place. So after 3 days of torment, the client gave the go-ahead - to replace the block of magnetic head unit with a working one.
The donor of the magnetic head block was the elder brother - WD30EFRX-68AX9N0. The patient's disk was sent for re-processing, because it was already possible to say that disk would start sawing from 0 head. After drying and replacing the block with new ones, the situation changed the motion vector. In result, from the 0 head was read about 200 GB before it stopped reading again. And from 2 head - almost all area was read. This way (replacing the defective block of magnetic heads), in general, greatly affected the amount of recovered data.

The cost of recovering information from an external hard drive