Some motherboards cannot handle bootloader-id with spaces in it.If for some reason it is necessary to run grub-install from outside of the installed system, append the -boot-directory= option with the path to the mounted /boot directory, e.g -boot-directory=/mnt/boot. That means if you are booting from the live installation environment, you need to be inside the chroot when running grub-install. Make sure to install the packages and run the grub-install command from the system in which GRUB will be installed as the boot loader.If you want to use any additional GRUB module that is not included in the standard GRUB EFI file grub圆4.efi on a Secure Boot system, you have to re-generate the GRUB EFI grub圆4.efi with grub-mkstandalone or reinstall GRUB using grub-install with the additional GRUB modules included. As discussed in #Shim-lock, this is not the case on UEFI systems with Secure Boot enabled. This whole article assumes that inserting additional GRUB2 modules via insmod is possible.Follow EFI system partition#Check for an existing partition to find out if you have one already, otherwise you need to create it. To boot from a disk using UEFI, an EFI system partition is required.Installing to the fallback boot path will still work even in BIOS mode since it does not touch the NVRAM. When installing to use UEFI it is important to boot the installation media in UEFI mode, otherwise efibootmgr will not be able to add the GRUB UEFI boot entry.
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