Prevent Insecure Booting Of Your Mac

maxphunk writes "So you can boot anyone's Mac using a CD or (for newer machines) mount the hard drive using target disk mode. Therefore, your machine isn't secure, right? Stock, yes; otherwise, no. Apple has a neato utility described here that eliminates this problem and more, using Open Firmware Password Protection. I have installed it on my iBook (late 2001) and I am definitely pleased with the results." It requires Mac OS X 10.1 or greater, and prevents things like starting up in single user mode, verbose mode, resetting PRAM, and more.