Hard Drive Not Mounting, but showing connected in Disk Utility

I accidentally locked myself out of my external hard drive. While it was connected, I went into the Info and went under "Ownership & Permissions" and unchecked the Ignore ownership on this volume and I clicked the You Can drop box and changed it to No Access. The drive doesn't mount on the desktop anymore but I see it in disk utility. What should I do?

Macintosh:~ matthewjavier$ cd /Volumes
Macintosh:Volumes matthewjavier$ ls -l
total 8
lrwxr-xr-x 1 root admin 1 Feb 11 07:56 Macintosh HD -> /
d---r-xr-x 21 matthewjavier matthewjavier 782 Feb 11 18:44 Matt's Extra Brain Storage External
drwxrwxrwx 3 matthewjavier admin 102 Feb 2 2007 Matt's iPhoto & iTunes
drwxrwxrwx 3 matthewjavier admin 102 Apr 8 2007 Matt's iPhoto & iTunes 1
drwxrwxrwx 3 matthewjavier admin 102 May 13 2007 Matt's iPhoto & iTunes 2
drwxr-xr-x 3 matthewjavier admin 102 Dec 8 2006 mattstaycalm
Macintosh:Volumes matthewjavier$

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