Customizing CNCs

-To install the (unofficial, unsupported!) preview image on the SD card /dev/sdX, use (change /dev/sdX to your SD card device name): ~$ wget https://people.debian.org/~gwolf/raspberrypi3/20190206/20190206-raspberry-pi-3-buster-PREVIEW.img.xz -It is recommended to check the image was correctly downloaded by comparing its SHA256: ~$ wget https://people.debian.org/~gwolf/raspberrypi3/20190206/20190206-raspberry-pi-3-buster-PREVIEW.img.xz.sha256 ~$ sha256sum -c 20190206-raspberry-pi-3-buster-PREVIEW.img.xz.sha256 -Burn ~$ xzcat 20190206-raspberry-pi-3-buster-PREVIEW.img.xz |...