Cannot install Home Assistant without ethernet on Raspberry Pi4

zsoltn · January 30, 2024, 9:25am

I went through the same frustration (and ended up in this thread). After some digging, I found the solution based on the official documentation:

github.com

home-assistant/operating-system/blob/bd3cae5300092b9045378939c2de5385d1de3f1a/Documentation/configuration.md

# Configuration

## Automatic

You can use an USB drive with HassOS to configure network options, SSH access to the host and to install updates.
Format a USB stick with FAT32/EXT4/NTFS and name it `CONFIG` (in all capitals). Alternative you can create a `CONFIG` folder inside the `boot` partition. Use the following directory structure within the USB drive:

```text
network/
modules/
modprobe/
udev/
authorized_keys
timesyncd.conf
hassos-xy.raucb
```

- The `network` folder can contain any kind of NetworkManager connection files. For more information see [Network][network.md].
- The `modules` folder is for modules-load configuration files.
- The `modprobe` folder is for modules configuration files (/etc/modprobe.d)

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and this thread:

Steps, assuming you use some Linux distro:

install HA with the raspberry PI installer
mount your boot partition (you can find it using lsblk), e.g.sudo mount /dev/sda1 /home/username/rpi-disk1/
create config folder sudo mkdir -p /home/username/rpi-disk1/CONFIG/network
create my-network file sudo nano /home/username/rpi-disk1/CONFIG/network/my-network with content:

[connection]
id=my-network
uuid=<RANDOM-UUID>
type=802-11-wireless

[802-11-wireless]
mode=infrastructure
ssid=<WIFI-SSID>

[802-11-wireless-security]
auth-alg=open
key-mgmt=wpa-psk
psk=<WIFI-PASSWORD>

[ipv4]
method=auto

[ipv6]
addr-gen-mode=stable-privacy
method=auto

unmount partition: sudo umount /home/username/rpi-disk1, and unmount the SD card
after starting your PI, you will be able to access your HA server within 5 minutes