Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

This question already has an answer here:

We installed Ubuntu 12.04 and updated to 12.10 (Raring Ringtail) on a separate partition of our Mac tower. However, when trying to load Mac OS X from Grub, we get an immediate kernel error along the lines of "invalid kernel," which states that no Mac OS version has yet been set. Ubuntu itself works flawlessly, and we can see that all the data on the Mac OS partition is perfectly fine. What is the likely issue, and how can it be fixed?

share|improve this question

marked as duplicate by Chan-Ho Suh, Kevin Bowen, Thomas Ward, Eric Carvalho, Basharat Sialvi May 30 '13 at 3:59

This question was marked as an exact duplicate of an existing question.

try refind, a of fork of refit, boot manager for efi-based machine.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.