Create DevTerm CM3 OS image from scratch
GNU edited this page Jun 13, 2022
·
10 revisions
The image based on raspberry pi os
and it is better to run a Ubuntu 21.04 in a VirtualBox to do all the jobs
The entire operation requires a certain experience in linux
be careful
wget https://downloads.raspberrypi.org/raspios_full_armhf/images/raspios_full_armhf-2021-05-28/2021-05-07-raspios-buster-armhf-full.zip
unzip 2021-05-07-raspios-buster-armhf-full.zip
sudo losetup --show -f -P 2021-05-07-raspios-buster-armhf-full.img #assume loop0
sudo mount /dev/loop0p2 /mnt/p2
sudo mount /dev/loop0p1 /mnt/p2/boot
cd /mnt/p2
sudo mount --bind /dev dev/
sudo mount --bind /sys sys/
sudo mount --bind /proc proc/
sudo mount --bind /dev/pts dev/pts
#sudo mv etc/ld.so.preload etc/ld_so_preload
sudo chroot .
curl https://raw.githubusercontent.com/clockworkpi/apt/main/debian/KEY.gpg | sudo tee /etc/apt/trusted.gpg.d/clockworkpi.asc
echo "deb https://raw.githubusercontent.com/clockworkpi/apt/main/debian/ stable main" | sudo tee -a /etc/apt/sources.list.d/clockworkpi.list
sudo apt update && sudo apt install devterm-thermal-printer devterm-keyboard-firmware devterm-fan-temp-daemon-rpi devterm-thermal-printer-cups devterm-kernel-rpi devterm-audio-patch -y
Config xrandr
sudo bash -c 'cat << EOF > etc/X11/Xsession.d/100custom_xrandr
xrandr --output DSI-1 --rotate right
EOF'
config lightdm
/etc/lightdm/lightdm.conf
greeter-setup-script=/etc/lightdm/setup.sh
sudo bash -c 'cat <<EOF >/etc/lightdm/setup.sh
#!/bin/bash
xrandr --output DSI-1 --rotate right
exit 0
EOF'
sudo chmod +x /etc/lightdm/setup.sh
Modify /etc/dphys-swapfile
CONF_SWAPSIZE=512
Change the default wallpaper
The following files changed
- /etc/xdg/pcmanfm/LXDE-pi/desktop-items-0.conf
- /etc/xdg/pcmanfm/LXDE-pi/desktop-items-1.conf
- /etc/lightdm/pi-greeter.conf
- /home/pi/.config/pcmanfm/LXDE-pi/desktop-items-0.conf
Delete wallpaper address temple.jpg,change the desktop_bg color to #202020
change /etc/hostname to clockworkpi
in /boot/cmdline.txt ,add fbcon=rotate:1, remove quiet
exit
#sudo mv etc/ld_so_preload etc/ld.so.preload
sudo umount /mnt/p2/dev/pts
sudo umount /mnt/p2/dev
sudo umount /mnt/p2/proc
sudo umount /mnt/p2/sys
##clear bash
sudo rm -rf root/.bash_history
#sudo rm usr/bin/qemu-arm-static
cd -
sudo umount /mnt/p2/boot
sudo umount /mnt/p2
sudo losetup -D /dev/loop0 #assume loop0
- Linux
sudo dd if=2021-05-07-raspios-buster-armhf-full.img of=/dev/sdX bs=8M status=progress