Oliver Elphick wrote:
> For example, /etc must be in the root filesystem and mount writes to
> /etc/mtab

That particular case is easy to workaround, just link /etc/mtab to
/proc/mounts. Don't do this if you use lookback mounted filesystems a
lot though, as it screws that up.

I have a system with the entire disk mounted read-only (/tmp, /var/lock,
/var/log, /var/mail, /var/run, /var/tmp, /var/spool/exim, and a few
other dirs are copied onto a ramdisk during boot), and it boots and
works ok. The boot is a trifle unclean as a few things try to access the
disk and whine that they cannot.

-- 
see shy jo

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