Computer viruses are programs that copy themselves automatically and may destroy
your files. One of the effect of a virus on a usb flashdrive is turning all its contents
to Protected Operating System Files so that if you insert it to a computer, you can't
see any files inside because it is hidden. Showing the hidden files on the folder
options is not enough, you have to uncheck the 'Hide Protected System Files' option
as well. But this
will not solve the problem. You can only see your files temporarily.
To overcome this, follow the instruction below.
1. Open command prompt.
2. Type: attrib -S -H G:\*.* /S /D /L
* This will unset the attribute "Protected Operating System Files" on the files from a usb
flashdrive on drive 'G:'.