Disappearance of Files From Flash Memory (USB)

Problem:
The disappearance of files from the flash disk or external (External HDD) after suffering by viruses although they still exist (evidenced by the flash or disk space fills up).

Solution:
1 Open Notepad and type the following line:
(Make sure to leave a space between each letter and last)
Code:
attrib -s -h / s / d *. *
2 Save the file with any name and extension is as follows:
anyname.bat
3. Close Notepad and then copy the file to a flash or external disk.
4 Double-click the file to open it

5. The file in the form of the familiar black screen will be opened, press (Enter) then wait a bit (just seconds).
6 now, see your hard exterior or your flash you'll find that the files have reappeared.