There are hidden files and super hidden files, hidden files are visible if you select “show hidden files and folders” from the folder options. To see a super-hidden file you will have to select “show hidden files and folders” and deselect “hide protected system files”
To super-hide a file do the following:
If you are familiar with DOS skip the first 5 steps and just DOS browse to the folder with the files to be hidden.
right click the folder with the files to be hidden and select new->shortcut
in the shortcut location type “cmd” , press next then finish.
right click the created file and select properties
empty the field start in. and press OK.
start the created file.
in the black screen type
attrib *.* +h +s +r To hide all files
attrib *.txt +h +s +r To hide all .txt files.
Later, to unhide the files open the created file and type