Cyclic redundancy check (CRC) is a data transmission error detection function, which performs polynomial calculation on data and appends the obtained result to the back of the frame. The receiving device also executes a similar algorithm to ensure the correctness of data transmission.

And integrity. If the CRC check fails, the system will copy the data to the hard disk repeatedly, and it will fall into an infinite loop, and prompt "cyclic redundancy check of data error", resulting in the copy process can not be completed.

The solution is as follows:

1, insufficient power supply or damaged data cable can cause this error. Check and replace the data cable of the mobile hard disk.

2. Moving the hard disk box will also cause this problem (if you move the hard disk like this).

3. Right-click the problem disk-Properties-Tools-Start checking, and the file system error will be automatically repaired, and the bad sectors that are attempted to be restored will be scanned to start repairing. After the repair, such problems can generally be solved.

4, anti-virus inspection, some viruses can also lead to this situation.