Unhide virus infected files using Command Prompt "CMD"

After cleaning your flash drive with an updated antivirus ,this is the best way to show up your hidden files :

Click on "Start" -->Run --> type "cmd" and click on OK

assuming that your flash drive letter as F:

Enter this command.

attrib -h -r -s /s /d f:\*.*        "Or just Copy Paste it directly into CMD"

Note : Don't forget to replace the letter g with your flash drive letter.

Now press "Enter".
 

Go to your drive, and see if you can now see all of the hidden files now.