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Thread: Single boot EFI?

  1. #1
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    Single boot EFI?

    Hi everyone,

    I have a mid 2012 macbook air that I'd like to install Ubuntu on. I would look to boot through EFI and not the legacy bios, and I would like it to be a single boot installation (ie no Refit or dual booting).

    I've been looking all over the internet and I haven't really found a solution, does anyone have a similar setup that can shed some light on this?

    Thanks!
    That's what she said.

  2. #2
    Join Date
    Jul 2005
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    Distro
    Xubuntu 22.04 Jammy Jellyfish

    Re: Single boot EFI?

    You have to boot the CD or USB you are using to install in UEFI mode from the boot menu that will appear usually when you press a specific key, which key depends on your BIOS.

    Having got the CD/USB booted into live mode, I suggest you use gparted to create a new partition table using GPT not ms-dos, then make a 200MB EFI partition at the start of the disk, then a new partition for root (/) of about 20GB, and the rest for /home, minus a swap of whatever size you want or need. You can forget about swap being twice the size of your ram, and either use 2-4GB, or if you want to hibernate make it the same size as your ram.

    For GPT partition tables there are no extended and logical partitions; all are primary.

    See: https://help.ubuntu.com/community/UEFI for lots more detail, which I think will be similar for your Mac installtion.

  3. #3
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    Re: Single boot EFI?

    Thanks for the reply. Just for clarification, should I be using the AMD64Mac ISO, or the regular AMD64 ISO?
    That's what she said.

  4. #4
    Join Date
    Oct 2009
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    Re: Single boot EFI?

    From what I've read, the (U)EFI boot option was removed from the "Mac" image for compatibility; you'll want to go with the AMD64 ISO.

  5. #5
    Join Date
    Jun 2009
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    Kubuntu

    Re: Single boot EFI?

    I do not know Macs, but have these links:

    Post #6 booting Kubuntu 12.10 in EFI mode on my Mac, by trogdor1138
    http://ubuntuforums.org/showthread.php?t=2091257
    Bit older, Mac & PC UEFI, note issues on some systems
    https://help.ubuntu.com/community/UEFIBooting
    UEFI boot install & repair info - Regularly Updated :
    https://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  6. #6
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    Sep 2008
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    Re: Single boot EFI?

    Thanks a lot everyone. Looks like I have a bit of reading to do before I attempt this.
    That's what she said.

  7. #7
    Join Date
    Apr 2013
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    SWFL
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    Distro
    Ubuntu 13.04 Raring Ringtail

    Re: Single boot EFI?

    A simple way to single boot any Linux distro is to bless the partition after install (to avoid waiting at the white boot screen for ages). To do this, boot to an OS X install disk or USB and start up a terminal window and use this command (replace /dev/disk0s1 with the appropriate location of your install):

    sudo bless --device /dev/disk0s1 --setBoot --legacy --verbose

    Afterwards, there will a short wait at the white screen when booting and then it will boot to grub.

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