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Golden Image Instructions

These steps were done using WSL. The steps may be different on Linux (primarily mounting the sd card)

Steps to Export Image:

Windows:

  • Attach SD card

  • Download Win32DiskImager Disk Imager

    Note: You can use WSL instead of this software but it’s a pain - Specify a path for your image in the “Image File” text box and select the SD card device on the right - Then click the read button and it will start copying.

If you are trying to image a pi, scroll down. Don’t press read. Do not press read. DO NOT PRESS READ UNLESS YOU ACTUALLY ARE SUPPOSED TO

  • Open WSL and navigate to where the image is stored EX: cd /mnt/c/Dev/Code-Stuff/MultiRotor/PI-Images
  • Run the following commands to shrink the image size (removes free space) 
    bash# Install PiShrink (Linux or WSL only)
wget https://raw.githubusercontent.com/Drewsif/PiShrink/master/pishrink.sh
chmod +x pishrink.sh
sudo mv pishrink.sh /usr/local/bin/pishrink
# Shrink (also auto-compresses with -z flag)
sudo pishrink drone-golden-v1.0.img
# Note: May need to sudo apt install parted if you don’t have it
    Do this!

Linux:

  • Attach SD card to computer
  • Run this command to find it’s name: lsblk
  • Run your dd command normally: sudo dd if=<PATH_TO_NAME_FROM_lsblk> bs=4M status=progress conv=sync,noerror \ | gzip > ~/drone-golden-v1.0.img.gz
  • Image will be created eventually
  • Run the following commands to shrink the image size (removes free space) 
    bash# Install PiShrink (Linux only)
wget https://raw.githubusercontent.com/Drewsif/PiShrink/master/pishrink.sh
chmod +x pishrink.sh
sudo mv pishrink.sh /usr/local/bin/pishrink

# Shrink (also auto-compresses with -z flag)
sudo pishrink -z drone-golden-v1.0.img
# Note: May need to sudo apt install parted if you don’t have it
    Do this!

Steps to Load Image on New PI:

Windows: - Unzip the image if it’s a .gz: gunzip name.img - Navigate to where your img is stored in WSL (/mnt/… for windows file system) - Download the update-user-and-pass.sh from the repo and put it in the directory where your image be - Update the following variables in update-user-and-pass.sh according to your values: - IMAGE - NEW_USER - NEW_PASS (should be mrrdt) - MOUNT_POINT (if needed) - Run update-user-and-pass.sh: sudo bash update-user-and-pass.sh

Image updated! - Put in the SD card your writing the image to. - Open up Win32DiskImager and set image file as the image you just updated with update-user-and-pass.sh. - Select the SD card you’re writing to and click “Write” - Boot it - Next time you SSH do the following:
ssh-keygen -R <ip-of-pi> EX: ssh-keygen -R 192.168.0.159 (Only applicable if you did this all on one network and the ip is the same) - When you boot into the pi, do the following to update hostname (needed to fix issue with batman startup) 

sudo nano /etc/cloud/cloud.cfg
Change preserve_hostname to true
sudo hostnamectl set-hostname mrrdt-#
sudo nano /etc/hosts
Change to mrrdt-#
sudo reboot
IF YOU DON’T REBOOT BEFORE DOING WIFI SETTINGS IT WILL BREAK STUFF BAD!!!!

  • Change network if needed 
    sudo nmcli dev wifi list 
To see available networks 
sudo nmcli --ask dev wifi connect "SSID_Value" password "password" ifname wlan1 name wificonnection
  • Make sure to update the wlan# that isn’t running batman.

Troubleshooting:

  • \d windows thing Fix with: sed -i 's/\r//' update-user-and-pass.sh