Case:
The data sent by the client resumed the hard disk and found that the market had been opened in other companies, and the customer had admitted to the processing.
Solution:
For the secondary opening hard disk, you cannot directly power the power to test. You need to open the hard disk detection of the magnetic head and plates in order to power the power test.There are no stains and no obvious scratches after inspection plates. The distance between the magnetic head structure is normal. After determining that there is no abnormality, use the original component to power the test and listen to the hard disk to start the search sound.The sound is normal, no knocking, but not ready.Load the LDR virtual guidance. Reading the hard disk firmware and found that one magnetic head cannot be read, and the fixedware read by the other magnetic head also has a large number of bad modules.In this case, first change the magnetic head.After replacing the magnetic head, the fault is not ready. After the virtual guidance, the two magnetic heads of 0 1 can read the firmware, but several important modules are bad.Fix the module and write the fixed module on a WD5000AVDS hard disk of the same model. After the substitute is booted with this substitute, the heat is switched to the fault disk, and the data mirror resumes successfully.