There is a way to hide a folder, from Windows and Dos, or to 'protect' it from most users.
***Can use a dos prompt, not just 'real' dos mode***
First way: In Dos, use "attrib [foldername] +s +h" to hide and 'system'-ify the folder-Still visible in show all files mode, but if attempted to delete the person will get a "the [x] folder is a system folder! deleting may cause windows to not work properly" or similar.
The second way also uses DOS, as well as high ASCII codes that Windows does not recognize.
To use, rename the folder (eg Test) to "_Test". The _ is actually a high ascii DOS character, ALT+231, a Greek symbol i believe.
In dos, it will appear similar to "†Test" (as before, Windows cannot show it.)
***To undo, rename it from "†Test" to "Test"
You can also use the 'attrib' trick to half hide it from Windows.
With the second way, Windows will NOT recognise the file as existing. It will appear as _Test, and anyone attempting to open it will get a file system error-file does not exist.
You cannot view this file from windows or undo it from Dos unless you know the Ascii code to rename it...
Plus you need Dos to undo the name, or go into the folder thru dos