Sleeping Macbooks

MacBooks and iBooks can be put to sleep simply by closing the lid. That's the method I usually use when I'm done for the day: just close the lid. Open it again the next morning (or two minutes later when you forgot something), and it's wide awake and ready to work. Most of the time. Sometimes your Mac is grumpy and overtired and doesn't want to wake up. Tapping the space bar might work, and so might re-closing the lid, patiently waiting for the pulsing led, and reopening. If that doesn't work, I can get my MacBook Pro to roll out of bed by hitting the power button briefly and then hitting "S". If you do that while it's already awake, you see that pressing the power button calls up the "Shutdown" dialog; hitting "S" says Sleep instead, and apparently may be a deeper sleep than the Apple Menu option. But this is all "hibernating" sleep: if your battery ran out during it, you'd lose open applications and files. Newer Macs now have a