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mniess
Asked: 2016-06-03 03:33:46 +0800 CST

How to select default EFI boot entry from within Ubuntu (MacPro)

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I have a Mac with Ubuntu, OSX and Windows (booting with rEFIt). I need a way to select which OS to boot on the next reboot. I can do that from within OSX and Windows (through Bootcamp) but I also need a way to tell my machine to boot OSX on the next reboot.

I can't hold ALT on boot to select the OS in the visual EFI screen, because my video card doesn't support that (upgraded my Mac).

PS: I tried efibootmgr but that doesn't show me the actual EFI boot options, only the options available in Grub (e.g. rEFIt does not appear as an option).

boot

1 Answers

  1. Best Answer

    You are wrong, efibootmgr does not show grub entries only. List what's in nvram of your machine with

    sudo efibootmgr -v

    and then use the

    sudo efibootmgr  -n xxxx

    to select the next boot item.

    If you have a bootloader not listed in the nvram list, then it is probably in the device default location, e.g. /EFI/Boot/bootx64.efi. In that case, you can make an nvram entry, and then refer to that entry with the bootnext flag.

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