New Elemental install does not boot with shim.efi

[dthaha]

What steps did you take and what happened:
[A clear and concise description of what the bug is.]

Upon booting a fresh install of Elemental (SLE Micro ISO x86_64 v2.0.4) on a Dell OptiPlex 7070 Ultra, system displays following error:

Invalid image
Failed to read header: Unsupported
Failed to load image: Unsupported
start_image() returned Unsupported

System does not continue booting. BIOS update does not resolve the issue.

What did you expect to happen:
System to boot to SLE Micro shell.

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

This is the same issue as harvester/harvester #3996 (since Elemental base image and Harvester are both SLE Micro). I used this comment to workaround the issue by creating a new UEFI boot entry to boot using grub.efi.

This is on a Dell OptiPlex 7070 Ultra. Seems to be limited to consumer Dell hardware.

Environment:

• Elemental release version (use cat /etc/os-release): SLE Micro 5.5
• Rancher version: v2.9.1
• Kubernetes version (use kubectl version): v1.30.4+k3s1
• Cloud provider or hardware configuration: Dell OptiPlex 7070 Ultra, BIOS 1.25.0

[frelon]

Hi @dthaha!

Interesting, have you tried booting a regular install of SLE Micro 5.5? It could narrow down where the actual error is. We could also try with a newer version elemental that is based on SL Micro 6.0..

Let me know your findings!

[dthaha]

Thanks for looking at this, @frelon. I'll try both SLE Micro 5.5 and Elemental SL Micro 6.0 to validate.