using Arch Linux) and install GRUB manually (see ArchWiki). The partition type is still “dos”.Īlternative: Boot into a shell environment (e. Set the “UEFI CSM” (Compatibility Support Module) to “never” in the UEFI BIOS and reinstall the Linux distribution. CSM means Compatibility Support Module and it enables the legacy (BIOS) boot mode. It displays “Disklabel type: dos” which means that the partition is of type DOS/MBR which could cause trouble (according to the documentation in the ArchWiki).įurthermore, in the UEFI/BIOS of my machine under “Advanced | OS selection” there is the option “UEFI CSM” set to “always”. This displays information about the partition table. I’m using an Arch Linux image to boot into a shell environment. Grub-install: error: efibootmgr failed to register the boot entry: Input/output error. Unable to install grub-install dummy : Fatal ErrorĬould not prepare Boot variable: Function not implemented The installation of grub-install dummy has failed When trying to install a new Linux distribution (Debian or Mageia or Arch Linux) on my new machine, the installation failed with the following error messages:
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