How did you install Debian on Galileo? Maybe you'll find some help from the same people who were able to install and use Debian, as you did.
I see... maybe asking in the "tutorial comments" to his author... but I do not see much activity...
From the tutorial:
"La información de este material fue extraída del repositorio del https://engage.intel.comhttp://sourceforge.net/p/galileodebian/wiki/Home/ proyecto galileo-debian."
did you ask over there? (Last Update: 2014-09-14).
As far as I know Intel supports its own versions of yocto and no other OS/Linux version.