To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.

ubuntu@ubuntu:~$ ls '/media/ec17c2f5-e222-4281-a7db-582ee1663a1d/etc/X11' 
app-defaults             rgb.txt  xorg.conf   Xsession
cursors                  X        Xreset      Xsession.d
default-display-manager  xinit    Xreset.d    Xsession.options
fonts                    xkb      Xresources  Xwrapper.config
ubuntu@ubuntu:~$