Xanthrax your guide works! Thanks.
I have now 10.9 up and working, except for Usb 3/4 port with mouse/keyboard not working, but usb storage working (they were ok on Montain Lion).
In Your guide, at point 2):
2. After the restart you may get a bios alert about the CMOS reset, don't worry it will be fixed, set the correct date and time in bios set the sata back to AHCI, and boot the system. Open Pandora, chose post install and then chose remove orange drives and CMOS reset.
I cannot find in Pandora any way to remove orange drives and CMOS reset.