How to show hidden files on external hard drive

Problem Question:
I have problem in my Computer . I am using Windows Vista, Windows 7, 8  XP SP2.
The problem is that i don't know what type of threat came in my PC through net or external drive. it hides all my folders of only external hard drive. whenever I open the external hard drive i cant see anything but when i see properties of that drive it shows data. If i know the name of folder like my picture when i type it in address bar I:\my picture then it open n show my data. how to remove this prob?
what type of virus is this?I have tried to scan the external hard drive using kaspersky internet security but i cant see them. plz help me if any body know this.

Answer:

Hello,

Try this 1.

May be the files are in hidden mode.

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

Here I assume your external hard drive as G:

Enter this command.

attrib -h -r -s /s /d g:\*.*

You can copy the above command --> Right-click in the Command Prompt and

paste it.

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

Now press "Enter".

Now check for your files in external hard drive.

Best of luck.