U disk shows 0 bytes data recovery case

Case:
After the customer’s U disk is inserted into the computer, the prompt is formatted, viewing the U disk attribute, the available space and the useful space are 0 bytes, but the customer has preserved important data in the U disk.

Solution:
First analyze the underlying sectors of the U disk, and find that the MBR information of the 0 sector and the partition table information are not corresponding. Find the “55 AA”” 16 -bit inlet feature code