Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3) I upgraded to Mac OS X Mountain Lion. It does not start, it just stays at a loading screen with the apple logo. I can only use recovery mode, and there is an option for reinstalling, but I am unable to do that. Is there any way I can downgrade to lion from recovery mode? EDIT: I do not have a backup. Yes, I am an idiot for not backing it up, but I don't have an external HD to do so.