Problem description: The
D drive cannot be opened and the disk is not formatted because the internal structure of the file system of this I drive is damaged. How to find the specific recovery method of the unformatted disk data see the text 
tool / software: extreme data recovery software
Step 1: After Baidu search and download the program, double-click the partition to be recovered directly. 
Step 2: The software will quickly put the scanned data into the directory with the same name as the disk to be recovered 
Step 3: Put the data to be recovered Click on the hook, then click Save in the upper right corner, and the "Save As" button will copy the file on the hook. 
Step 4: The last step is to wait for the program to complete the COPY of the data. 
Note 1: The data recovered from the disk without formatting needs to be temporarily saved to other disks.
Note 2: If you want to restore the D disk is not formatted, you need to pay attention to it, you must restore the data before formatting.