Datasheet

How do you know which version of the Mac OS your computer has? Simple.
Just choose About This Mac from the Ú menu (the menu with the Ú symbol
in the upper-left corner of the menu bar). The About This Mac window pops
up on your screen, as shown in Figure 1-3. The version you’re running appears
just below Mac OS X in the center of the window. Click the More Info button
to launch the System Profiler application, which has much more information,
including bus speed, number of processors, caches, installed memory, net-
working, storage devices, and much more. You can find more about this
useful program in Chapter 18.
Shutting down properly
Turning off the power without shutting down your Mac properly is one of the
worst things you can do to your poor Mac. Shutting down your Mac improp-
erly can really screw up your hard drive, scramble the contents of your most
important files, or both.
If a thunderstorm is rumbling nearby or you’re unfortunate enough to have
rolling blackouts where you live, you might really want to shut down your
Mac. (See the next section, where I briefly discuss lightning and your Mac.)
To turn off your Mac, always use the Shut Down command on the Ú menu
(which I discuss in Chapter 4) or shut down in one of these kind-and-gentle
ways:
Figure 1-3:
See which
version of
Mac OS X
you’re
running.
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Chapter 1: Mac OS X Leopard 101 (Prerequisites: None)
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