How can I make root filesystem read-only?
My /etc/fstab is like below.
/dev/sda1 / ext2 errors=remount-ro 0 1
/dev/sdb1 none swap sw 0 0
/dev/sdc1 /tmp ext2 defaults 0 2
/dev/sdd1 /var ext2 defaults 0 3
/dev/sde1 /home ext2 defaults 0 4
I am trying to make the root filesystem including /usr subdirectory
read-only. But, if I set the mount option of / to ro, system cannot boot.
Making only /usr read-only is not enought for me.
Cannot root filesystem be read-only?
Thanks in advance.