Thanks Stuart for all these thoughts. That's a lot of great ideas.

Let me try to clarify a few things:

- change `do_fsck` to `do_fsck -y`
---------------------------------------------
  I assume you mean Line 410. That seems like a great idea.
  Do I understand correctly that the normal behaviour for this `do_fsck` is to 
run the check, and mark filesystems dirty, and then enter single-user mode?
  Whereas if I replace it with `do_fsck -y `, the filesystems will not be 
marked dirty, and it will not enter singe user mode?


- starting network and sshd in single user mode
----------------------------------------------------------------
        In /etc/profile, I guess I can add something like:

           if [IS_SINGLE_USER_MODE]; then
                sh /etc/netstart
                rcctl start sshd
           fi

does that seem reasonable?

(I have to figure out how to check if I am in user mode)


- noatime, memory buffers, mfs
------------------------------------------
All great ideas, I will implement that.


@crystal, thank you, unfortunately, even an SBC on the router is not a viable 
option for this specific use case.

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