Enable readonly boot partition on #RaspberryPi:
1. In terminal run sudo raspi-config to Raspberry PI Software configuraiton tool
2. Go to 4 Performance options menu
3. Go to P2 overlay file system enable/disable read-only file system
4. Would you like the overlay file system to be enabled? Select NO
5. Confirmation message appears
6. Would you like the boot partition to be write-protected? Select YES
7. Confirmation message appears
8. In main menu select FINISH
9. Reboot system YES
⤵️