ok, what i have found is that these changes have to be made in the linux system, not in the Mac files. When i open the files in the linux, i can not find anything called /etc/udev/rules.d/60-rayshobby.rules. All i have is /etc/udev/rules.d/50-usbtiny.rules and /etc/udev/rules.d/70-persistant-net.rules and /etc/udev/rules.d/70-persistant-cd.rules