[Representation] Hard failure
hard disk is not recognized in use, and the multiple switch ineffective.
[] Fault Type
hard head damage
[Features] Typical
1. hard power without any reaction
2. hard circuit chip modules significant damage or loss situation.
[Detection Process]
1. hard disk power, after power observation state hard
2. carefully observed in good condition hard board
[] Recovery process
- The degree of damage to the hard circuit board tests if the key board module (ROM chips, driver chips, etc.) is not damaged, the circuit
Other damage to the module board made tentative repair, or based on the matching circuit board requires full replacement of the circuit board and further repair;
- After the repair is completed circuit boards, the hard disk access detection device, if the abnormal noise or hard phase power device can not obtain the correct disk appears
OFF information, and to prove that the hard drive circuit board is damaged single fault type, there may be physical bad sectors, firmware Areas, head, motor even
Where damage to the disk, to be done at this time in accordance with the corresponding fault types further recovery solution;
- At this time, if the hard disk may be normal power shall apparatus control head reads disk related information, determines the information is correct before it
Barrier disk image to a secure store;
- Hard disk full image backup device out of logical analysis and checking if the file system in the image to be inconsistent, then
Damage in accordance with the appropriate file system solutions to repair, until the user needs to migrate data.
[Process] acceptance
1. do all of the data generated statistical properties one by one verification ensures that the file is correct
2. user-specified key data files targeted check, ensuring that users successfully recover critical data.
[Tips]
1. Remember that the longer the hard bump, bump times may cause damage to the hard disk, which is fatal destruction of data, while data recovery efforts will be extremely difficult if not impossible to complete
2. Remember that non-professionals disassembling the damaged hard drive, or replace components welding, ROM chips circuit module within the matching requirements are very strict, if the chip is damaged or lost, in this case would be more time-consuming data recovery.