1.3 KiB
https://www.balena.io/etcher/ is a popular tool to flash OS images to SD cards & USB drives.
rusEFI console in headless mode is known to work on Raspberry 3.
buster is codename for Debian version 10.
Ubuntu is a Debian fork. focal is a codename for one of Ubuntu releases.
Raspberry Pi OS (previously called Raspbian) is based on Debian.
Notes on setup
Wifi password is in /etc/network/interfaces file
sudo dhclient wlan0
Armbian
Default root password 1234 Default baud rate 115200
https://www.hackster.io/mexmarv/iot-raspberry-pi-wifi-headless-setup-6be0de
https://www.furkantokac.com/rpi3-fast-boot-less-than-2-seconds/
https://medium.com/swlh/make-your-raspberry-pi-file-system-read-only-raspbian-buster-c558694de79
latest packages
sudo apt-get update && apt-get upgrade sudo apt-get remove --purge triggerhappy logrotate dphys-swapfile
sudo rm -rf /var/lib/dhcp /var/lib/dhcpcd5 /var/spool /etc/resolv.conf sudo ln -s /tmp /var/lib/dhcp sudo ln -s /tmp /var/lib/dhcpcd5 sudo ln -s /tmp /var/spool sudo touch /tmp/dhcpcd.resolv.conf sudo ln -s /tmp/dhcpcd.resolv.conf /etc/resolv.conf
sudo rm /var/lib/systemd/random-seed sudo ln -s /tmp/random-seed /var/lib/systemd/random-seed
ExecStartPre=/bin/echo "" >/tmp/random-seed
Hardware
http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2#Dimensional_Diagram