/tmp is RW (it's a RAM backed). You can just change dropbear to use a key file under /tmp. $ dropbear -d /tmp/my_dsskey I've also used apps that I can't change the default location (or I was too lazy to rebuild them), so I had to copy the entire directory under /tmp then loop mount it like this: $ mkdir /tmp/alsa $ cp /var/lib/alsa/* /tmp/alsa $ mount -o loop /tmp/alsa /var/lib/alsa If you get pppd and dropbear to work, let us know.
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