Recover data from wrong format

Case:
The F drive cannot be opened. It is prompted to format the data after the formatization of F drive, and the data of 70MB has been copied to the F drive. The 20GB data of the previous F drive needs to be restored.

Solution:
After the testing of the engineer is basically the same as the customer description, it is formatted and has a slight coverage. The data recovery software is used for repair and recovery, and the data recovery is successful.