Adding a PCI SATA controller

[kermitxyz]

In my continuing quest to get my HDDs to spin-down, I have added a PCI SATA controller.

However, on boot I now get the following error. Once the card is removed Proxmox boots fine.

The system is an HP Elitedesk 800 G4.

I have read that it is necessary to ensure the new controller is in a separate IOMMU group for passthrough, but I can't even get that far to check!

Any ideas?

 

[Sviat]

Hello,

Did you try to check something in kernel or syslog?

 

[Impact]

Disable every virtualization option in the UEFI and you might be able to boot. Or just reverse what you did for now and use Resource Mappings to avoid this.