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Alex Poulos
Asked: 2012-03-06 14:58:50 +0800 CST

Help editing GRUB on Ubuntu 12.04

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I'm thinking about making a partition to test out Mac OS X on my own computer hard drive and don't think it would suffice if I used it through VM. So, how would I go about returning to single boot Ubuntu after I decided I didn't want the Mac Partition any more?

I already know how to make the partition and work Gparted, but I have a few basic questions as well.

How would I go about editing grub to do this? I have "StartupManager" installed but I'm not sure how do all this from the GRUB wiki in 12.04...

EDIT 1 What am I to edit here: enter image description here

grub2 dual-boot mac startupmanager 12.04

1 Answers

  1. Best Answer

    You do not use the start-up manager to edit the GRUB file. The startup manager is used to select configurations of the GRUB.

    If you are installing or loading OS-X you will want it to use the bootloader currently on your Ubuntu system. Direct it to use the GRUB file to boot. Once installed, reboot into Ubuntu and update the GRUB file by sudo update-grub.

    IF when done with OS-X and want to remove it, reformat the OS-X partition and run sudo update-grub

    now if all else fails boot Ubuntu using a Live CD and install boot-repair

    sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair

    enter image description here

    use this to fix the GRUB file.

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