Dell Dimension 9150 Owner's Manual page 120

3 When
press <F12>.
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 (see page 63) and try again.
The Boot Device Menu appears, listing all available boot devices. Each device has a number
next to it.
4 At the bottom of the menu, enter the number of the device that is to be used for the current
boot only.
For example, if you are booting to a USB memory key, highlight USB Flash Device and press
<Enter>.
NOTE:
check the device documentation.
Changing Boot Sequence for Future Boots
1 Enter system setup (see page 114).
2 Use the arrow keys to highlight the Boot Sequence menu option and press <Enter> to access
the menu.
NOTE:
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 (enabled devices have a checkmark).
5 Press plus (+) or minus (–) to move a selected device up or down the list.
120
Appendix
F2 = Setup, F12 = Boot Menu
To boot to a USB device, the device must be bootable. To make sure your device is bootable,
Write down your current boot sequence in case you want to restore it.
appears in the upper-right corner of the screen,