I would like to use Tails OS to create a pseudo air-gapped system. The system has WiFi hardware still, but it is "unusable" in Tails due to lack of firmware. I would like to further ensure it remains completely "unusable".
I'm aware of the manual option to "Disable all networking" on the greetings screen, but would like something more permanent.
The system does not have hardware switches to turn WiFi on / off.
I tried uninstalling networking packages, but the changes don't persist.
See Defense in depth.