Shulou(Shulou.com)06/01 Report--

[fault type]

Damage to U disk or memory card driver chip

[typical characteristics]

There is no response or prompt to insert the disk drive after the ◎ U disk or memory card is connected to the computer

◎ insert USB disk prompt or memory card prompt disk removable without media

◎ insert USB disk prompt or memory card prompt "removable disk used space and free space is 0 bytes"

◆ detection process

a. Connect the USB flash drive or memory card to the computer to see if the hardware can be recognized properly.

◆ recovery proc

a. Evaluate the damage to the USB drive or memory card. Select the appropriate spare parts according to the matching requirements of the media chip model, and replace the damaged media driver chip.

b. After the driver chip is replaced, the media is backed up to secure storage with the device.

c. Logically analyze and verify the complete image of the hard disk backed up by the device. if there is an inconsistency in the file system in the image, it will be repaired according to the solution of the damage to the corresponding file system until the data needed by the user is migrated.

◆ acceptance process

a. Do attribute statistics on all the migrated data to ensure that all the data required by users have been migrated successfully in terms of the number and capacity of files.

b. Verify the integrity of all migrated data to ensure that the files are correct in terms of directory structure and underlying logic.

c. Pertinently check the key data files specified by the user to ensure the successful recovery of the user's critical data.

a. Connect the USB flash drive or memory card to the computer to see if the hardware can be recognized properly.

The importance of ◎ driver chips:

The driver chip is the basis of the normal operation of the U disk or memory card, and it is the control module to read and write the data in the memory chip. if the driver chip is damaged, it is impossible to read and write the data in the media.

Possible causes of ◎ failure:

Abnormal power supply of ◆ causes the driver chip to burn out.

A short circuit in the ◆ medium causes the driver chip to burn out

The external force of ◆ causes the driver chip to deform or break

◎ Media Protection Tip:

◆ must avoid non-professionals to disassemble and replace damaged U disk or memory card. The environment of media driver chip replacement and the security requirements of data reading equipment are very strict. If U disk or memory card is disassembled or replaced informally, it will have a very serious impact on the data in the media, or even permanently destroy the data in the media.

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