Why did Apple not include an option to disable Safe Sleep (aka Hibernation) in Energy Saver? As it is, closing the lid of your new MacBook or MacBook Pro and moving it too quickly can destroy the hard drive. I first learned of this unpleasant state of affairs thanks to random restarts after closing the MacBook Pro's lid. Here's how to disable Safe Sleep, and make your MacBook sleep instantly (and safely!):
sudo pmset -a hibernatemode 0
sudo rm /var/vm/sleepimageUPDATE: This is no longer sufficient to disable Safe Sleep on most modern Mac models; see this post for more information. I had to run this third command on a Mid 2012 MacBook Pro to stop it from hibernating after four hours:
sudo pmset -a autopoweroff 0/mac | May 15, 2007