Edit the “config.txt” file to disable WiFi (and Bluetooth.)
You can access config.txt either by mounting the SD Card in a separate computer and editing it directly (there is FAT32 partion called boot).
Or if you have the HassOS SSH console enabled, you can connect with that and edit the file and reboot the Pi.
/mnt/boot/config.txt
kernel=u-boot.bin
disable_splash=1
dtparam=audio=on
# Minimum memory assigned to GPU
gpu_mem=32
# Disable WiFi
dtoverlay=pi3-disable-wifi
# Disable Bluetooth
dtoverlay=pi3-disable-bt
For more detailed information see:
- https://developers.home-assistant.io/docs/en/hassio_debugging.html
- https://github.com/home-assistant/hassos/blob/dev/Documentation/configuration.md
- https://github.com/home-assistant/hassos/blob/dev/Documentation/boards/raspberrypi.md
If you make a mistake and HassOS won’t boot, you must remove the SD card and edit it in another computer.