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    Thanks, In the grub-install --efi-directory=/boot/EFI as i chroot into /mnt. Commented Nov 26, 2017 at 19:20
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    Maybe stupid Q but I don't have an EFI dir. Where do I get one? I mean it is supposed to contain files, which command can recreate it? Commented Aug 29, 2019 at 0:18
  • @LennartRolland If you have a UEFI compatible system then your system drive will be GPT partitioned and contains a "UEFI System partition." usually the first partition and will be of the type EF00. Many distributions will mount this by default as /boot/efi to among other things allow the GRUB boot loader to update its files. If not you'll have to mount it yourself and add it to fstab. You might also have a UEFI system but that is using legacy mode which means your partitions will be msdos type and you won't have a /boot/efi. Weirder configurations exist but that covers the majority of them. Commented Sep 8, 2019 at 20:43
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    @giusti Probably better to just not make specific device name references. Commented Oct 19, 2019 at 18:10
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    @jdwolf when I typed"mount | grep /dev/[efi device]" I got "grep: Unmatched [, [^, [:, [., or [="..... maybe a misspelling? Commented Aug 11, 2020 at 21:20