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How do I resolve a GRUB: “invalid arch independent ELF magic” error?

rated 0 times [ 10] [ 0] / answers: 1 / hits: 79460 / 2 Years ago, sat, may 14, 2022, 9:42:42

I am stuck with a rather irritating problem I ran into after installing 11.10 on my macbook pro 5,5.

I did a clean install efi booting into the setup using the desktop cd. Upon the first reboot I was presented with the "invalid arch independent ELF magic" and grubs rescue console.

I have read GRUB: "invalid arch independent ELF magic" after install on SSD but the solution is no solution for me since installing grub via live cd only means installing the mbr version and I can't seem to find any manual on how to install grub-efi while booted into the live cd.

So my question is: How can I either edit the grubx64.efi file in my EFI Partition, reinstall grub-efi with a live CD / DVD or use grub rescue commands to fix this issue?

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answered 2 Years ago tionpromoti · Accepted Answer

The solution for me was (and probably for anyone having that problem):

Boot into the live cd and type into the terminal (of course you must edit the mounting operations respecting your own partition table):

sudo apt-get install grub-efi-amd64

sudo mount /dev/sda3 /mnt

sudo mount /dev/sda1 /mnt/boot 

sudo grub-install --root-directory=/mnt /dev/sda

Now grubx64.efi should boot without any problems.

Running update-grub while booted into ubuntu restored the more eye friendly looks of the grub boot menu.