Is enabling secure boot on the host supported?

[ns33]

Starting my first install; is enabling secure boot supported? I get the error "Operating system loader has no signature". This would lead me to believe secure boot isn't supported on the bare metal host. I can't find such mentioned in the documentation so I figured I ask

 

[VictorSTS]

Secure boot is supported [1] since PVE8.1 iso.
Maybe you need to delete you current secure boot settings if that computer was used with other OS and/or untick a setting that may be called "install default keys" or "preenroll keys".

[1] https://pve.proxmox.com/wiki/Secure_Boot_Setup#Using_a_Proxmox_Project_with_Secure_Boot