Case:
A 500G Hitachi hard disk was found. One day, when the computer was opened, the hard disk read was slow, and the files also appeared sometimes to open and sometimes could not be opened.
Solution:
Engineers use professional equipment testing, and the hard disk has physical bad sectors. First, the degree of damage to the physical bad sectors of the hard disk is evaluated.When reading the hard disk again, focus on the sector that is not seriously damaged, and provides higher integrity for the recovery of hard disk data.Continue to control the data blocks that have not been read before repeatedly, and check the lack of recovery of the previous recovery work, and make the data block read as close as possible; conduct logical analysis and verification of the full mirror of the hard disk backup of the device.There are inconsistencies in the file system in the image, and the solutions of the corresponding file system damage are fixed until the data required by the user is migrated.