So I did something dumb and now I'm locked out of my Mavericks partition on my MacBook. The dumb thing I did, specifically, was trying to change the user folder using the Directory Utility app, which should have worked but it didn't for some reason, and now I can't log in. Still have a Yosemite partition on the same computer though.
What I want to know is, is there a way, from outside the Mavericks boot, to change the home folder info? I know this info must be in some config file somewhere, however deeply hidden. Failing that, can I create a guest account, or enable root user, or any of that magic from outside the boot?
Oh, and please don't take this opportunity to lecture me about backup drives. The one I was using failed and I'm a student who can't afford another one right now. Life is hard.