Problem description: The
hard disk cannot be opened and cannot be accessed because the internal structure of the file system of the I disk is damaged. Cannot access the D drive prompts the inaccessible data recovery method. See the text 
tool/software for specific recovery methods : Extreme Data Recovery Software
Step 1: After downloading and decompressing the software and running, select the disk to be recovered, and then click the "Start Recovery" button. 
Step 2: The software will quickly put the found files in the directory with the same name as the disk to be recovered. 
Step 3: Check the file you want to restore, and then click Save in the upper right corner, "Save As" button to copy the checked file. 
Step 4: The last step is to wait for the software to copy the data to completion. 
Note 1: If you want to restore the inaccessible disk, you need to pay attention, you must first restore the data and then format it.
Note 2: The recovered data cannot be accessed and needs to be temporarily saved to other disks.