I want to have a system which boots, and starts a subset of daemons. Then afterward I ssh to it, do something which 1) mount an encrypted disk, 2) start other daemons (which depends on the encrypted disk). I know how to do this with policy-rc.d, how can I do this with systemd ? I know this list may not be the best place to ask, feel free to point me to another way to get help.