The post discusses maximizing the lifespan of Raspberry Pi’s SD card by running it with a read-only root filesystem. While this can increase longevity, it also means logs won’t persist after a reboot, necessitating remote logging for troubleshooting. The content covers steps to remove unnecessary software, disable services, and implement workarounds for services requiring disk writes. It advises moving temporary folders to tmpfs and setting filesystems as read-only to freeze the system in place. Other tips include migrating to ntp, managing snaps, and addressing various system components. Ultimately, caution is advised as these changes can render the Pi unbootable.
https://www.dzombak.com/blog/2024/03/Running-a-Raspberry-Pi-with-a-read-only-root-filesystem.html