When installing Ubuntu, I choose to install GRUB on a partition other than:

/dev/sda i.e. /dev/disk0

as this is stated in various tutorials.

However, this way I end up with the error message: Missing Operating System

When installing GRUB in /dev/sda everythings works fine. Why?

@ mods: I hope this is not off-topic, as this a problem with the EFI boot on a Mac, I assume. If I'm wrong, please migrate this question to askubuntu.

  • When your trying install Grub are you running from a Ubuntu Live CD? – MrDaniel Feb 13 '12 at 22:07
  • @MrDaniel Yes. I install Ubuntu using a Live CD. – gentmatt Feb 13 '12 at 22:11

Make a new partion from within OS X, then install http://refit.sourceforge.net/ and then ubuntu: https://help.ubuntu.com/community/MactelSupportTeam/AppleIntelInstallation

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