Ubuntu
grub2 package

  1. Bug #1097570
  2. Comment #11

Comment 11 for bug 1097570

Revision history for this message
Colin Watson (cjwatson) wrote :

The messages about \EFI\BOOT\fallback.efi are harmless noise from shim; you can disregard those.

Do you have any way to confirm that it's actually booting from the CD when in secure boot or UEFI-first mode (e.g. drive noise or activity lights)?