Reinstall OS X on a Windows 8 only computer
I own a Macbook Air (latest one). I removed OS X, and installed only Windows 8 only, so it's now the only OS I have on my MBA. I would like to reinstall OS X, and have a dual boot. I tried by creating a new partition to install OS X on it by using the recovery tool. When I try to reinstall OS X, the tool tells me that the drive is locked. I saw a couple of discussions about it, but wasn't able to fix my problem. Any ideas about it? I would like to reinstall OS X without formatting my Windows 8 partition.
MacBook Pro with Retina display, OS X Mountain Lion (10.8.4)