I'm currently trying to install arch linux alongside windows 10 on my computer which is UEFI and formatted as a GPT partition table. However, when installing grub using the command:

grub-install --target=x86_64-efi --efi-directory=esp --bootloader-id=grub

This returns

Installing for x86_64-efi platform.
grub-install: error: esp doesn't look like an EFI partition.

Before doing this I had created 3 partitions on my hard-drive, alongside two windows partitions. I used cgdisk to create a 2gb EFI system partition, a 4gb Linux Swap partition, a 91gb Linux filesystem partition.

I entered the commands

mkfs.fat -F32 /dev/sda3 (the efi partition)
mount /dev/sda5 /mnt (the linux filesystem)
mount /dev/sda3 /boot (to mount the efi partition in /boot as reccomended)

Then installing grub and efibootmgr, I get the errors listed above.

Any help is greatly appreciated!

  • Yes, when I made the drive a fat32, I had /dev/sda3. I'm sure I've booted into UEFI because there is an option to boot into just the "disk" or "UEFI: Disk". As for the name I thought that was just what I had to enter as the command but I also checked --efi-directory=/boot and --efi-directory=/boot/efi. Commented Jun 28, 2016 at 4:23
  • If Windows is already installed, you should already have an ESP (surely /dev/sda1), also there's no need for grub with UEFI, use systemd-boot instead.
    – cylgalad
    Commented Jun 28, 2016 at 7:09
  • I have an SSD for windows 10 and I use the hard drive to store games, etc, which I want to use for arch. Would this still work? Commented Jun 28, 2016 at 7:27
  • 2gb for /boot/efi is a tad too much if you don't intend to store huge kernel+initrd pile there forever, 100mb is more than enough for a bootloader these days :) simple grub-install should suffice, and it will run efibootmgr for you as well. see also rodsbooks.com/efi-bootloaders Commented Jun 28, 2016 at 7:45

1 Answer 1


The problem is in this part: --efi-directory=esp.

You should not put “esp” as it is only a place holder for the directory that holds EFI.

Assuming that EFI is contained in /boot. In this case this part of the line will read:


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