Dell Precision T7400 (Late 2007) - Manual (Page 85)

System Setup 85
A menu appears.
4 Use the up- and down-arrow keys to navigate to Boot Device Menu, then
press <Enter> to select the option.
5 The Boot Device Menu appears, listing all available boot devices.
6 Use the up- and down-arrow keys to navigate to the device (that is to be
used for the current boot only).
7 Press <Enter> to select the device.
For example, if you are booting to a USB memory key, highlight USB Device
and press <Enter>.
NOTE: To boot to a USB device, the device must be bootable. To make sure your
device is bootable, check the device documentation.
Changing Boot Sequence for Future Boots
1 Enter the system setup program (see "System Setup" on page 75).
2 Use the arrow keys to highlight the Boot Sequence menu option and press
<Enter> to access the 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 the spacebar to enable or disable a device.
5 Press <U> and <D> to move a selected device up or down the list.
Booting to a USB Device
NOTE: To boot to a USB device, the device must be bootable. To ensure that your
device is bootable, check the device documentation.
Memory Key
1 Insert the memory key into a USB port and restart the computer.
2 When
F12 = Boot Menu appears in the upper-right corner of the screen,
press <F12>.
The BIOS detects the device and adds the USB device option to the boot
menu.
3 See "Selecting the Boot Device for the Current Boot" on page 84.