I am using Refind to boot into Ubuntu 13.04 on a Macbook Pro (8,2). However, I seem to have messed up my install to the point where Ubuntu no longer boots (I get a flashing underscore but no text entry abilities after a brief flash of the Ubuntu graphic splash screen).
Anyway, I'd like to boot into the console or recovery mode or something in order to diagnose/fix the issue. But with Refind, the only options I am given do not seem to work. Low Graphics mode almost works, except I don't have a mouse and no keyboard controls seem to work, so I can't click through options.
The other options never actually drop me at a prompt.
(I tagged the question with Refit, but I am actually using Refind).