[CentOS] du vs df size difference

Robert Heller wrote:

> You can't.  You must unmount.  You should be able to do this from
> single user mode if the file system cannot be unmounted under multiuser
> mode (eg /usr, /var, etc.).  Usually other mount points can be
> unmounted, but depends on what is running on the system at the time. 
> Unmounting /home would require that you kick all users off for example,
> unmounting /var/www would require stopping apache, etc.
> 

I mounted the partition to a directory under /mnt (simultaneously) and 
was able to see the hidden files.

Ryan