So I partitioned my hard drive to install 10.8 Dev 4, the partition is formatted to Mac OS Extended (Journaled) however it won't let me boot into the drive (when turned on holding option i only have back up and Macintosh HD). So I ran the installer on Lion and selected the partition as the target install, it says it has installed fine but when I go to boot into the partition it is not named what I have called it (can't remember what it says) and when I select it I get this ![]()
Untitled by James A Gordon, on Flickr
Anyone know why it's not working?

Untitled by James A Gordon, on Flickr
Anyone know why it's not working?