110 | System SetupChanging Boot SequenceChanging Boot Sequence for the Current BootYou can use this feature to change the current boot sequence, for example, to boot fromthe optical drive to run Dell Diagnostics from the Drivers and Utilities disc.The previous boot sequence is restored at the next boot.1 If you are booting from a USB device, connect the USB device to a USB port.2 Turn on (or restart) your computer.3 When F2 Setup, F12 Boot Options appears in the lower-right corner of thescreen, press .NOTE: If you wait too long and the operating system logo appears, continue towait until you see the operating system’s desktop. Then shut down yourcomputer and try again.The Boot Device Menu appears, listing all available boot devices.4 On the Boot Device Menu choose the device you want to boot from.For example, if you are booting to a USB memory key, highlightUSB Storage Device and press .Changing Boot Sequence for Future Boots1 Enter system setup. See "Entering System Setup" on page 104.2 Use the arrow keys to highlight the Boot menu option and press to accessthe menu.NOTE: Write down 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 plus (+) or minus (–) to change the boot priority of the device.