I have a Ubuntu system that has installed various program and custom stuff.
I would like to make it read-only so that against power interruption and other non-privileged user to damage it.
I think mount EXT4 as read only won't help, since it requires /var/log and /dev folder to be writable,
I was wondering can you make the existing system into a live CD harddisk (I.e. a live CD image into harddisk)?