Created a VM with hardware from information in one of the many online tutorials on this topic, that is a few years old, and recommends 8GB HDD space on the VM Started the VM with the OPNsense installer DVD ISO mounted on virtual dvdrom drive Went through installer steps to the end where the insta...
Source: [Dev.to](https://dev.to/hubschrauber/create-opnsense-vm-on-proxmox-saga-15oa)