pi64
pi64基於Debian 9，地址如下https://github.com/bamarni/pi64
燒錄過程還是用SDFormatter格式化，用Win32DiskImager寫入即可，沒什么復雜的。
該系統自帶ssh，默認host為raspberry，默認名pi，默認密碼raspberry。
先用自帶源update一下，把nano和apt-transport-https裝上，之后換清華源：
# 默認注釋了源碼鏡像以提高 apt update 速度，如有需要可自行取消注釋
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main contrib non-free
# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main contrib non-free
# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-backports main contrib non-free
# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-backports main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian-security stretch/updates main contrib non-free
# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security stretch/updates main contrib non-free
ubuntu
ubuntu官方提供了支持raspberry pi的arm64系統，地址如下https://wiki.ubuntu.com/ARM/RaspberryPi，選里面的arm64版本
燒錄過程一樣，這個也自帶ssh，默認host為ubuntu，默認名ubuntu，默認密碼ubuntu
這個換清華源直接用sed，換源前確定系統有apt-transport-https：
sudo sed -i 's/http:\/\/ports.ubuntu.com/https:\/\/mirror.tuna.tsinghua.edu.cn\/ubuntu-ports/g' /etc/apt/sources.list