Problem description: The
removable disk cannot be opened prompting that it needs to be formatted because the internal structure of the file system of this I disk is damaged. The J drive shows the inaccessible prompt that needs to be formatted. For details on how to find the specific recovery method, see the text 
tool / software: extreme data recovery software
Step 1: After Baidu searches and downloads the program, select the disk to be recovered, and then click the "Start Recovery" button. 
Step 2: The program will quickly place the scanned file in the same directory as the volume name of the disk to be recovered in 
step 3: check the data you want to recover, and then the upper right corner to save, "save as" button to check out the file COPY. 
Step 4: Wait for the program to copy the file. 
Note 1: The data that needs to be formatted and recovered needs to be temporarily saved to another disk.
Note 2: If you want to restore the removable disk, you need to format it. You must restore the data before formatting.