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I research somewhere but I cannot download grubx64.efi file. It always show: "550 Failed to change directory."

So, can you give me downloadable link, please ? Thank you very much !

  • Please help me ! I can't find where to download – Tung Nguyen Mar 16 '15 at 9:57
  • Did you solved it? – 0x2b3bfa0 Mar 16 '15 at 14:12
  • It's unclear what you're trying to do or why. Please explain as precisely as possible what you're trying to achieve on a higher level. – David Foerster Mar 19 '15 at 1:32
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    Sometimes Windows messes up my /boot/efi/ubuntu dir, which contains grupx64.efi file. Do not download those files from the net - it may be virus! Instead, boot to livecd, chroot into your ubuntu installation, make sure that /boot and /boot/efi is mounted, delete all files from /boot/efi/ubuntu/ and run: apt-get install --reinstall grub-efi-amd64 - this should re-generate the grubx64.efi file. – Martin Vysny Apr 24 '16 at 12:26
  • The official images can be found at the ubuntu archive site: archive.ubuntu.com/ubuntu/dists/bionic/main/uefi/grub2-amd64/… Replace bionic with the name of your release. – Red15 Apr 1 '19 at 0:02
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I uploaded mine.

grubx64.efi
shimx64.efi

But a safer option is to restore them from the livecd, chroot into your ubuntu installation, make sure that /boot and /boot/efi is mounted, delete all files from /boot/efi/ubuntu/ and run: apt-get install --reinstall grub-efi-amd64 - this should re-generate the grubx64.efi file.

A third option is downloading them from the official Ubuntu repositories:

Trusty 14.04 Xenial 16.04 Bionic 18.04

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