I was going to install osx on a spare hard drive I had laying around I got all the way to the part were it asks you to choose a drive to install it on....the drive wasn't there. I opened up the disk utility thing and told it to fix the drive and format it to an apple format instead of dos. Now I go back to the installer and the hard drive is there, but it says that I can't install anything on it. What am I doing wrong?