Raspberry Pi Readonly / Readwrite

Testes on RPi Model B
20181205

setup

cd /home/pi
sudo bash

echo Installing all dependencies
apt-get install git rsync gawk busybox bindfs

echo Disabling swap
dphys-swapfile swapoff
dphys-swapfile uninstall
update-rc.d dphys-swapfile disable
systemctl disable dphys-swapfile

echo Cloning repository
git clone https://github.com/josepsanzcamp/root-ro.git

echo Doing the setup
rsync -va root-ro/etc/initramfs-tools/* /etc/initramfs-tools/
mkinitramfs -o /boot/initrd.gz
echo initramfs initrd.gz >> /boot/config.txt

echo Restarting RPI
reboot

これでreadonlyになる

to readonly

sudo sed -i -e "s/^#initramfs initrd.gz$/initramfs initrd.gz/g" /boot/config.txt
reboot

to readwrite

sudo mount -o rw,remount /mnt/boot-ro
sudo sed -i -e "s/^initramfs initrd.gz$/#initramfs initrd.gz/g" /mnt/boot-ro/config.txt
reboot