If the Recovery partition exists, you can shut down your computer by holding the power button for 10 seconds, and then select the Recovery partition using the Startup Manager (see the instructions in Exercise 4.2, in the “Test the OS X Recovery Disk” section). This may take a while,” your computer was unable to find a local Recovery partition.
If your computer displays a globe icon with the text “Starting Internet Recovery. If this happens, click the Shut Down button and try again. If your computer starts up to the login screen instead of OS X Recovery, you may not have held Command-R long enough.
If no recovery partition is available, Mac computers with newer firmware can actually start up from an Apple server over the Internet and get access to the OS X Recovery features. When you hold down Command-R during startup, the computer attempts to start up using a recovery partition on the hard disk. Press the power button on your computer, and then hold down Command-R until the gray Apple logo appears on the screen.If your computer is on, shut it down by choosing Shut Down from the Apple menu.To access the Installer and other utilities in OS X Recovery, you need to start up from the hidden Recovery HD partition. You will not perform an installation, but you will get an opportunity to look at the steps leading up to the installation.
