What files in /etc must be writable?
Bootcd allows you to use the NOT_TO_RAM option to make files
physically reside on the CD and only be symlinked into the Ram disk.
I wrote a script which adds every file in /etc to NOT_TO_RAM, needing
to conserve space in the Ram Disk. The theory is if I need to change
settings in the liveCD I'll copy the file to /root and update the
symlink in Ram.
However, the liveCD had errors during boot, because some files
apparently have to be writeable during boot. For example, I guess,
/etc/mtab. Does /etc/fstab have to be writeable? What other files
need to be writeable?
Some huge things like /etc/gconf clearly *don't* need to be writeable,
but I'd like everything to be "frozen" unless it's necessary to write
it. I want to conserve every bit of space in the Ram disk possible.
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