One Time Boot Menu; System Setup Options - Dell Latitude 5421 Service Manual

Table 4. Navigation keys (continued)
Keys
Down arrow
Enter
Spacebar
Tab
Esc

One time boot menu

To enter one time boot menu, turn on your computer, and then press F12 immediately.
NOTE: It is recommended to shutdown the computer if it is on.
The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options
are:
● Removable Drive (if available)
● STXXXX Drive (if available)
NOTE: XXX denotes the SATA drive number.
● Optical Drive (if available)
● SATA Hard Drive (if available)
● Diagnostics
The boot sequence screen also displays the option to access the System Setup screen.

System setup options

NOTE: Depending on your computer and its installed devices, the items listed in this section may or may not appear.
Table 5. System setup options—System information menu
Overview
BIOS Version
Service Tag
Asset Tag
Manufacture Date
Ownership Date
Express Service Code
Ownership Tag
Signed Firmware Update
Battery Information
Primary
Battery Level
106 System setup
Navigation
Moves to the next field.
Selects a value in the selected field (if applicable) or follow
the link in the field.
Expands or collapses a drop-down list, if applicable.
Moves to the next focus area.
NOTE:
Moves to the previous page until you view the main screen.
Pressing Esc in the main screen displays a message that
prompts you to save any unsaved changes and restarts the
system.
Displays the BIOS version number.
Displays the Service Tag of the computer.
Displays the Asset Tag of the computer.
Displays the manufacture date of the computer.
Displays the ownership date of the computer.
Displays the express service code of the computer.
Displays the Ownership Tag of the computer.
Displays whether the Signed Firmware Update is enabled on your computer.
Displays that battery is primary.
Displays the battery level of the computer.
For the standard graphics browser only.