This is maybe repost, but i think this is important, so I still post it, to make me easy to remember. I ever face problem, Windows explorer cannot show folders, but files can. When we setup our Windows explorer to view System files, everything is shown. Nah…This is how the virus works. It change the folders attribute to hidden so we can’t see any folders inside the flashdrive, but the size still there. So, to fix it, just change back the folders attribute to normal.
Right click on Command Prompt, run as Administrator, and then do this command :
attrib -h -r -s /s /d f:\*.*
where F:\ is the drive letter of your flashdrive (it can be changed depend on your drive letter).
Done…Everything is back now.