This is one on thousands of folders like this. If I uncheck the "read only" box and the apply, it goes straight back to being checked when I next open the propities. See, its not hidden. Please any help?
The Read Only attribute and the hidden attribute are two different attributes. One has nothing to do with the other.
the read only attribute will prevent the object from being modified, while the hidden attribute will prevent the object from being displayed unless your settings are configured to show hidden objects (settings are in tools).
Again, you should run
attrib -r -h F: /s /d
on that drive to unhide any hidden files. If it is the case that there are no hidden files then you should use chkdsk on that drive becasue the NTFS reporting of the file structure is incorrect:
chkdsk f: /f /x