I'm trying to reinstall my mountain lion, but it won't install on my regular disk
so, i have a problem.
When i tried to restart my Mac earlier today, I got the gray screen. Now i'm trying to reinstall my mountain lion, but when the install guide tells me to choose a disk to reinstall on, it says that my disk is locked.
please help, urgent!
thanks.
MacBook Pro (13-inch, Mid 2012), OS X Mountain Lion (10.8.2)