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

I have Ubuntu 11.10 installed. Just installed Mac OS X, updated GRUB, which generates 2 Mac entires (32bit & 64bit). But when I try booting from these, it just restarts. I suppose I need EFI GRUB? Which I tried installing. But I think, the EFI partition needs to be the first partition? I currently have it like:

share|improve this question
up vote 0 down vote accepted

First of all... are you tring to run Mac Os on a non-apple hardware? Anyway as far as I know yes, efi partition should be the first. I don't think you need to install grub efi since i can start mac os from bios grub (on a mac trough bios emulation). It seems to me it has crappy performances tough. Easyest way to solve this is installing MacOS before Ubuntu, if you don't want that you should provide informations on your hardware, on your partition table and on you grub configuration.

share|improve this answer
Yes, I am actually on a self-built PC. Performance is so far ok. Havent tried games tho – Jiew Meng Jan 1 '12 at 2:43

this might help.

share|improve this answer
Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – Jjed Dec 31 '11 at 22:12

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

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