Jarek Hartman
Monday, November 8, 2021

Proxmox 7 can’t boot to UEFI (Home Assistant and other UEFI images)

Found this at opportunity of installing Home Assistant – from HA OS qemu2 image – boot process just stops into UEFI Shell prompt:

BLK0: Alias (s):
PciRoot (0x0) /Pci (0x1E,0x0) /Pci (0x1,0x0)/Pci (0x5,0x0) /Scsi (0x0,0x0)
BLK2: Alias (s):
PciRoot (Ox0) /Pci (0x1E,0x0) /Pci (0x1,0x0) /Pci (0x5,0x0) /Scsi (0x0,0x0) /HD (
2,GPT,26700FC6-BOBC-4CCF-9837-EA1A4CBA3E65,0x10800,0xC000)
BLK3: Alias (s):
PciRoot (0x0) /Pci (Ox1E,0x0) /Pci (0x1.0x0) /Pci (0x5,0x0) /Scsi (0x0, 0x0) / HD (
3,GPT,8D3D53E3-6D49-4C38-8349-AFF6859E82FD,0x1C800,0x80000)
BLK4: Alias(s):
PciRoot (0x0) /Pci (Ox1E,0x0) /Pci (0x1,0x0)/Pci (0x5,0x0) /Scsi (Ox0,0x0) / HD (
4, GPT,FCO2A4F0-5350-406F-93A2-56CBED636B5F,0x9C800,0xC000)
BLK5: Alias (s):
PciRoot (0x0) /Pci (0x1E.0x0) /Pci (0x1,0x0) /Pci (0x5,0x0) /Scsi (0x0,0x0) /HD (
5,GPT,A3EC664E-32CE-4665-95EA-PAE90CE9AA20,0xA8800,0x80000)
BLK6: Alias (s):
PciRoot (0x0) /Pci (Ox1E,0x0) /Pci (0x1,0x0) /Pci (0x5,0x0) /Scsi (0x0,0x0) /HD (
6,GPT,33236519-7F32-4DFF-8002-3390B62C309D,0x128800,0x4000)
BLK7: Alias (s):
PciRoot (Ox0) /Pci (Ox1E,0x0) /Pci (0x1.0x0)/Pci (0x5,0x0) /Scsi (0x0,0x0) / HD (
7.GPT,F1326040-5236-40EB-B683-AAA100A9AFCF,0x12C800,0x30000)
BLK8: Alias(s):
PciRoot (0x0) /Pci (0x1E.0x0) /Pci (0x1,0x0) /Pci (0x5,0x0) /Scsi (0x0 ,0x0) /HD (
8 ,GPT•A52A4597-FA3A-4851-AEFD-2FBE9F849079,0x15C800,0x200000)
Press ESC in 1 seconds to skip startup.nsh or any other key to continue.
Shell>

This seems to be a new behaviour in Proxmox 7.0 and it’s related to UEFI Secure Boot which is not fully implemented in Proxmox.

Resolution

VM Creation

First of all – you need to create the VM with UEFI Bios:

Once VM created, it should look more less like this:

Disable Secure Boot in UEFI Bios.

  1. Exit the shell by typing “Exit”
  2. Once entered Bios settings, go to Device Manager

  1. In Device Manager, select Secure Boot Configuration
  2. Un-tick Attempt Secure Boot and accept “Configuration Changed prompt”

  1. Press Esc, Esc and in the main screen select Reset

This should resolve the problem – not only for Home Assistant but also other UEFI based images

References

  • PVE setup
root@pve:/etc# cat ./pve/nodes/pve/qemu-server/116.conf
agent: 1
bios: ovmf
boot: order=scsi0
cores: 2
efidisk0: qcow2-local-zfs:116/vm-116-disk-1.qcow2,efitype=4m,pre-enrolled-keys=1,size=528K
ide2: local:iso/kubuntu-19.04-desktop-amd64.iso,media=cdrom,size=1871280K
machine: q35
memory: 2048
name: home-assistant
net0: virtio=4C:CC:6A:CC:01:20,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi0: qcow2-local-zfs:116/vm-116-disk-0.qcow2,size=32G
scsihw: virtio-scsi-pci
smbios1: uuid=9e0805c5-16b9-4741-89b2-dd1d9704da39
sockets: 1
vmgenid: a12f1129-e002-48c4-b9c9-fe2835ad795b