How to deal with the physical faults such as those physical faults such as the hard disk can't recognize the abnormal sound of power up?
[appearance of hard disk failure]
The hard drive is not recognized when in use, and it is invalid to switch on and off multiple times.
[fault type]
Hard disk head damage
[typical characteristics]
1. There is no response when the hard drive is powered on.
two。 Modules such as hard disk circuit chips are obviously damaged or lost.
[detection process]
1. Power the hard disk and observe the status of the hard disk after power up
two。 Carefully observe the integrity of the hard disk circuit board
[recovery process]
Evaluate the damage degree of the hard disk circuit board. If the key modules in the circuit board (ROM chip, driver chip, etc.) are not damaged, the circuit
Try to repair other damaged modules of the board, otherwise the circuit board will be completely replaced and further repaired according to the matching requirements of the circuit board.
After the repair of the circuit board is completed, connect the hard disk to the detection device, if there is an abnormal noise after the hard disk is powered on, or the device cannot correctly obtain the phase of the hard disk.
Close the information to prove that the hard disk is not a single fault type of circuit board damage, and there may be physical bad channels, fastener area problems, magnetic heads, motors and so on.
In the case of disk damage, further recovery must be made according to the solution of the corresponding fault type.
If the hard disk can be powered on normally at this time, it is necessary to use the device control head to read the relevant information of the hard disk and make sure that the information is correct.
The disabled hard disk is mirrored to secure storage
Logically analyze and verify the complete image of the hard disk backed up by the device. If the file system in the image is inconsistent, then
Repair according to the solution of the corresponding file system corruption until the data required by the user is migrated.
[acceptance process]
1. Verify the attribute statistics of all the generated data one by one to ensure that the file is correct.
two。 Pertinently check the key data files specified by the user to ensure the successful recovery of the user's critical data.
[warm reminder]
1. Remember to bump the hard disk again. Repeated bumps may damage the hard disk, which is also fatal to the data. At the same time, the data recovery work will become extremely difficult or even impossible.
two。 Keep in mind that non-professionals disassemble, replace or weld damaged hard drives. The matching requirements of ROM chips in the circuit module are very strict. If the chip is damaged or lost, the data recovery work will be time-consuming.
