Macintosh HD 'Locked' when trying to do complete reinstall Mavericks.
I tried to install mavericks and found out my HD was corrupted. I repaired it and want to do a reinstall of Mavericks however when I go to select install location it says my Macintosh HD is locked. Any tips?
MacBook Pro 13” 2.4 GHz 250 GB HDD, Mac OS X (10.6.6)