[Bug 1811496] Re: Make grub-ipxe work under UEFI

[Alkis Georgopoulos]

We talked a lot about secure boot, so let me clarify that the initial
issue, that my included patch addresses, is unrelated to secure boot.

The current grub-ipxe package hangs the computer under UEFI (with secure
boot disabled), as it does "linux16 ipxe.lkrn".

With the patch, it will boot ipxe.efi fine.

This change doesn't involve the grub2 source package at all; grub-ipxe
comes from the ipxe source package.

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Title:
  Make grub-ipxe work under UEFI

Status in ipxe package in Ubuntu:
  New

Bug description:
  Please update /etc/grub.d/20_ipxe so that:
  1) It uses ipxe.efi under UEFI, so that it works under UEFI as well, and
  2) It loads /boot/boot.ipxe as an initrd if the user provided a custom ipxe script there.

  Snippets - to be ran from /boot/grub/grub.cfg, as it's possible to
  dynamically switch bios/uefi in firmware settings:

  if [ "$grub_platform" = "efi" ]; then
    chainloader /boot/ipxe.efi
  else
    linux16 /boot/ipxe.lkrn
    if [ -f /boot/boot.ipxe ]; then
      initrd16 /boot/boot.ipxe
    fi
  fi

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