Cannot install OPNSense or pfSense - "Could not read from CDROM (Code 0004)"


New Member
May 13, 2022
Noob here, trying to install either pfSense or OPNSense on Proxmox VE 7.2-3.

I can install other VMs (e.g. Ubuntu, Alpine) with no problem.

However, no matter what I try with pfSense or OPNSense (I have tried ISOs from both), I keep getting the same message when I start the machine, meaning I can't install it:

Here's my current settings for the VM, which I have tried changing multiple times.

Will post details of my machine in next comment, as I can only add two pieces of media here.

Any suggestions?


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