this is a recap of everything that we collaborated on and figured out here:
http://www.tonymacx86.com/mavericks...art-installation-gigabyte-p55m-ud2-f11-2.html
use the standard Mavericks guide, with these additions.
1] build the unibeast USB install drive. i selected legacy USB support, but not sure if this was a factor or not.
2] download and rename the DSDT file to DSDT.aml and copy it to the USB drive /Extra folder. [this fixes the kb/mouse issue on first boot]
3] boot to USB using these flags:
GraphicsEnabler=Yes, cpus=1, -x, -v
4] when you are ready for "first boot" of mavericks, use these flags:
GraphicsEnabler=Yes, PCIRootUID=1, IGPEnabler=No, Graphics Mode=1680x1050x32, -x, -v
you may end up typing in the blind, as the box for flags is not long enough, just type slowly. replace the Mode numbers with the default/native rez of your monitor.
5] use the attached image for the multibeast options.
enjoy.