If the client computer is using Mac OS X version 10.2 or later, use the Startup Disk pane in System Preferences to select a NetBoot startup disk image.
Follow these steps to select a Network Install image from Mac OS X:
1. Open System Preferences.
2. Choose Startup Disk from the View menu.
3. Select the Network Install disk image you want to use to start up the computer.
4. Click Restart.