Booting Unraid from GRUB 2

Warning

This is an experimental configuration. It is not supported by Limetech. It might not work for your system.

Note

This process only works for EFI boot.

Easy Installation

Required Files

• GRUB files

Instructions

1. If present, rename the EFI folder on the flash drive to EFI-.
2. Extract the contents of grub-boot.zip to the root of the flash drive.

Info

This should result in an EFI and grub folder being present in the root of the flash drive.

Installation using grub-install

1. Download the required configuration files:

   • Embedded configuration: grub-load.cfg
   • Boot configuration: grub.cfg

2. Download the latest GRUB 2 Slackware package (currently 2.12).

3. In Unraid, from the folder containing the Slackware package and the two config files, install GRUB to the flash drive:

   installpkg grub-2.12-x86_64-16.txz
   grub-install --removable --efi-directory=/boot --no-bootsector dummy
   grub-mkimage --directory '/usr/lib64/grub/x86_64-efi' --prefix '' --config 'grub-load.cfg' --output '/boot/grub/x86_64-efi/unraid.efi' --format 'x86_64-efi' --compression 'auto' 'fat' 'part_msdos'
   cp /boot/grub/x86_64-efi/unraid.efi /boot/EFI/boot/bootx64.efi
   cp grub.cfg /boot/grub/
   

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