Dell Latitude D530 (Early 2008) - Manual (Page 56)

56 Using the Display
10 If prompted, click Yes to keep the settings.
11 Click OK to close the Display Properties window.
To disable dual independent display mode:
1 Click the Settings tab in the Display Properties window.
2 Click the monitor 2 icon, uncheck the Extend my Windows desktop onto
this monitor option, and then click Apply.
If necessary, press <Fn><F8> to bring the screen image back to the
computer display.
Windows Vista
1 Click the Windows Vista Start button , and click Control Panel.
2 Under Appearance and Personalization, click Adjust screen resolution.
3 In the Display Settings window, click the monitor 2 icon, click the Extend
the desktop onto this monitor check box, and then click Apply.
4 Click OK to close the Display Settings window.
To disable extended desktop mode:
1 In the Display Settings window, click the Settings tab.
2 Click the monitor 2 icon, uncheck the Extend the desktop onto this
monitor option, and then click Apply.
Using a Monitor as Your Primary Display
To swap your primary and secondary display designations (for example, to use
your external monitor as your primary display after docking), perform the
steps in the following section that corresponds to the operating system your
computer is using.
Microsoft ® Windows ® XP
1 Click the Start button and click Control Panel.
2 Under Pick a category, click Appearance and Themes.
3 Under Pick a task..., click the area you want to change, or under or pick a
Control Panel icon, click Display.
4 Click the Settings tab→ Advanced→ Displays tab.