VM always going into UEFI Interactive Shell

[thomas-hn]

Hi,

currently I am trying to migrate a Hyper-V machine that is UEFI based to Proxmox.
So far I was able to create the VM in Proxmox and also converting the disk image.
When I start the VM the machine goes into the "UEFI Interactive Shell" all the time. If I execute FS0:/EFI/debian/grubx64.efi in the interactive shell, my Debian system is correctly starting and running.

However, I am not able to get the automatic boot done. What I have done so far:

• A EFI Disk wa sadded to the machine (to be able to store the BIOS settings).
• As BIOS I have selected "OVMF (UEFI)".
• My qcow2 disk image is added as SATA drive.
• The Boot Order is set to SATA.
• In the BIOS under "Boot Maintenance Manager" -> "Boot Options" -> "Add Boot Option" I have added my /EFI/debian/grubx64.efi
• In the BIOS the Boot Order was changed to have by Debian as top-most entry in the list.
• The changes were commited.

Do you have any idea why the system still is not able to automatically start my Debian system? It still goes into the "UEFI Interactive Shell".
However, one difference I recognize after doing the BIOS changes -> If I am in the interactive shell, I can no longer start my system via FS0:/EFI/debian/grubx64.efi because this will only throw the "Command Error Status: Access Denied". If I remove the "EFI Disk" (to delete all BIOS settings) it is possible again to start the system manually in the interactive shell.

Any ideas?

Thansk a lot in advance,

Thomas

 

[thomas-hn]

After trying everything again, I found in the BIOS also the entry about "Secure Boot" which was enabled. After disabling it, the machine starts automatically without problems.