1. Install qemu
Installed Linux PC emulator on the host:
sudo apt-get install qemu-user-static
2. Download and extract the ubuntu-core
Firefly-rk3399 ubuntu root file system is based on Ubuntu base 16.04 to create. A user can ubuntu cdimg download, download selected Ubuntu-Base-Base-arm64.tar.gz-16.04.1 . After downloading, create a temporary folder and extract the root file system:
mkdir temp sudo tar -xpf ubuntu-base-16.04.1-base-arm64.tar.gz -C temp
3. Modify the root file system
Network ready:
sudo cp -b /etc/resolv.conf temp/etc/resolv.conf
Ready qemu
sudo cp /usr/bin/qemu-aarch64-static temp/usr/bin/
Into the root file system operations:
sudo chroot temp
Update:
apt update apt upgrade
Installation features they need
apt install vim git .... (according to their own needs to add)
Install xubuntu
apt install xubuntu-desktop