How to restore hidden files infected virus on USB and hardisk

How to restore hidden files on USB infected virus tutorial on this blog. Oke to the point, I have experience with my USB pen drive, after infected by some virus, My files is hidden. Now i have tutorial to restore hidden files infected virus on USB or hardisk :
1. Goto START Menu. Enter CMD in search box ( win 7 ) or in run ( win XP )and hit Enter. This would open up command prompt
2. Now go to the drive you want to work on. e.g. If you want to work on f: drive the type f: and press enter
3. Now enter the following command and hit enter.
attrib –s –h -r /s /d

You can also see the video below to restore hidden file
So how to restore hidden files infected virus on USB. goodluck