OK Adam I went back to Yosemite and it works in safe mode.I got there by once again typing all the commands as per your YouTube ,,Now I can not for the life of me get a boot into the OS,,I am going to use the usb your site suggested to modify EFI BUT i Really wanted to try your Pre Beta ,,,And I wanted to know if it sticks for upgrading to a newer OS or has to be redone..