Dell XPS One 24 (Late 2008) - Manual (Page 48)

48 System Setup
Changing Boot Sequence for the Current Boot
For example, you can use this feature to boot your computer from the CD
drive so that you can run the Dell Diagnostics from the Driver and Utilities
media and then from the hard drive when the diagnostic tests are complete.
You can also use this feature to boot your computer to a USB device such as a
memory key, or optical drive.
1 If you are booting to a USB device, connect the USB device to a USB
connector.
2 Turn on (or restart) your computer.
3 When the DELL logo appears, press <F12> immediately.
NOTE: Keyboard failure may result when a key on the keyboard is held down
for an extended period of time. To avoid possible keyboard failure, press and
release <F12> in even intervals until the Boot Device Menu appears.
If you wait too long and the operating system logo appears, continue to
wait until you see the Microsoft Windows desktop, then shut down your
computer and try again.
4 At the Boot Device Menu, use the up- and down-arrow keys or press the
appropriate number on the keyboard to highlight the device that is to be
used for the current boot only, and then press <Enter>.
For example, if you are booting to a USB memory key, highlight
USB Flash
Device and press <Enter>.
NOTE: To boot to a USB device, the device must be bootable. To ensure that your
device is bootable, check the device documentation.
Changing Boot Sequence for Future Boots
1 Enter system setup (see "Entering System Setup" on page 43).
2 Use the arrow keys to highlight the Boot Sequence menu option and press
<Enter> to access the menu.
NOTE: Make a note of your current boot sequence in case you want to
restore it.
3 Press the up- and down-arrow keys to move through the list of devices.
4 Press the spacebar to enable or disable a device.
5 Press plus (+) or minus (–) to move a selected device up or down the list.
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