ML is saying I can't install it as the HD isn't Mac OS Extended (Journaled). I checked in Disk Utility, and the Media itself ("500.11 GB ST9 blah blah Media) is Mac OS Extended (Journaled) but the simple Macintosh HD listed under it is only Mac OS Extended. ML installer says I should be able to enable journaling in Disk Utility, but I can't find out how and would rather not back up the entire computer and do a clean install. I don't even think I have enough room on my external HD to do that. How do I enable journaling?