[Bug 2066142] [NEW] grub-install with --removable flag broken in ubuntu 24.04

[Magesh GV]

Public bug reported:

Ubuntu Version: 24.04
Grub2-common: 2.12-1ubuntu7

Use Case/Scenario:

Create a bootable disk image.
 
Commands:
sudo qemu-nbd --connect=/dev/nbd0 <disk image file that was created>
sudo mount /dev/nbd0p3 /tmp/boot/
sudo mount /dev/nbd0p2 /tmp/efi/
sudo grub-install --target=x86_64-efi --efi-directory=/tmp/efi/ --boot-directory=/tmp/boot/ --modules="ext2 fat part_gpt xzio squash4" --removable --compress=xz

Write menuentries to /tmp/boot/grub/grub.cfg


What Happens:
System boots into grub prompt. Grub does not load /EFI/BOOT/grub.cfg automatically.

Manual Recovery on every boot:
Run this command when boot drops to grub shell: source $fw_path/grub.cfg

grub-install without --removable option works fine, but in my
understanding --removable option is required for some older EFI systems
at least.

This works fine when the same grub-install with --removable flag is run
on ubuntu 22.04 system.

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2066142

Title:
  grub-install with --removable flag broken in ubuntu 24.04

Status in grub2 package in Ubuntu:
  New

Bug description:
  Ubuntu Version: 24.04
  Grub2-common: 2.12-1ubuntu7

  Use Case/Scenario:

  Create a bootable disk image.
   
  Commands:
  sudo qemu-nbd --connect=/dev/nbd0 <disk image file that was created>
  sudo mount /dev/nbd0p3 /tmp/boot/
  sudo mount /dev/nbd0p2 /tmp/efi/
  sudo grub-install --target=x86_64-efi --efi-directory=/tmp/efi/ --boot-directory=/tmp/boot/ --modules="ext2 fat part_gpt xzio squash4" --removable --compress=xz

  Write menuentries to /tmp/boot/grub/grub.cfg


  What Happens:
  System boots into grub prompt. Grub does not load /EFI/BOOT/grub.cfg automatically.

  Manual Recovery on every boot:
  Run this command when boot drops to grub shell: source $fw_path/grub.cfg

  grub-install without --removable option works fine, but in my
  understanding --removable option is required for some older EFI
  systems at least.

  This works fine when the same grub-install with --removable flag is
  run on ubuntu 22.04 system.

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