I'm pretty sure I used this script to setup the VM: https://github.com/whiskerz007/proxmox_hassos_install
Here is my config
agent: 1
bios: ovmf
bootdisk: sata0
cores: 2
efidisk0: local-zfs:vm-101-disk-0,size=1M
machine: pc-q35-3.1
memory: 8192
name: hassos
net0...