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I am a novice and I am on a Mac. Help me anyway.

I need to change the start up disk to be my Ubuntu 16.04 partition instead of my OS X partition.

A Mac guy added users to my OS X to replace the battery and promptly I cannot start up nor see my Linux partition.

I know this is due to Mac changing the start up disk to itself.

I cannot change the start up disk back in OS X's settings.

Is there something I can do in Ubuntu to fix it?

  • 2009 Macbook Pro
  • OS X El Capitan
  • Ubuntu 16.04
  • Currently booting from Ubuntu 16.04 LiveUSB
813bruce
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1 Answers1

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There's not anything you can do from within Ubuntu because your issue has to do with your bootloader, which is the software that runs before any operating system is loaded.

Generally, you can make changes in BIOS settings (your motherboard firmware) to allow you to select a device to boot, or to give the option to adjust boot priority.

Apple's bootloader options will appear if you hold the ⌥ (option) key when booting; however your Linux install will not be present since it is not a supported or recognized OS in Apple's proprietary firmware.

If you want to dual boot Ubuntu with Apple hardware, you will need to replace Apple's bootloader with something like rEFInd. Due to Apple's closed-source approach to their hardware and software, it is unfortunately not very novice-friendly and it may also void your warranty / support.

Nmath
  • 12,333
  • Luckily, I don't have a warranty!

    I figured out a way to install Ubuntu and run it, but an apple tech messed it up for me by adding users in OS X

    Do you know anywhere I can get help with the apple command line?

     – 813bruce Aug 20 '19 at 23:45