• Place the Snow Leopard Install DVD in the optical drive of your Mac.
• The Mac OS X Install DVD window appears once the Snow Leopard DVD has been mounted on the desktop. If it doesn't, go to the desktop and double-click the DVD icon.
• Double-click the Install Mac OS X icon in the Mac OS X Install DVD window.
• The Install Mac OS X window appears, giving you two choices. You have the option of continuing with a regular upgrade installation or using the utilities provided on the installation DVD. Select Utilities from the drop-down menu.
• The Snow Leopard installation warns you that you must restart your Mac and boot from the DVD in order to use the included tools. Press the Restart button.

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