To retrieve the hidden folders from the usb drive plz follow the following steps:
1. Go to the command promt by typing cmd in the search box from the start button.
2. Go to your usb drive root directory. EX: Type G: and press enter key.
3. Type the following command: attrib -s -h -r /s /d *.* and press enter key.
4. Wait for some time.
6. Type exit and press enter.