Unless I totally misunderstood the original post...
In the earlier releases of LMCE (i.e. 710) if you installed via the CD method you were given a choice to during setup to run primarily as a PC or as a Core.
This option is presently not available and may not be.
Choosing How to Primarily Use the Computerhttp://wiki.linuxmce.org/index.php/Installation_Guide
You have to select how you plan to use your computer, either:
* Primarily used as a PC -- you can start LinuxMCE manually when you need it, or
* A dedicated LinuxMCE -- you can start Kubuntu when you need it.
For the dedicated core server, choose the second option. If you have a power outage, you can then set the computer to auto-reboot and restore your system without intervention. (If you are serious about home automation, it is best to have a dedicated core server, anyway.) It is possible to access the Kubuntu desktop from within LinuxMCE (see below).
If you choose the first option and have a power outage, then you will require a boot-up script, cron scheduling, or manual intervention in order to restart the LinuxMCE system.
If you are just experimenting with LinuxMCE and/or primarily use the PC as a Kubuntu desktop, the first option is suitable. Also, if you wish to directly install LinuxMCE directly on a PC that will be used as a Media Director, but intend to trade its function back and forth between that of a Kubuntu desktop and a Media Director, also choose the first option.
(Many PCs that will be used as Media Directors can simply be netbooted from the Core, however, so you do not really need to install LinuxMCE on them at all if you intend to netboot (which is generally easier).)