Option Settings; Changing The Boot Sequence For The Current Boot; Boot Sequence - Dell OptiPlex 780 Ultra Small Form Factor Service Manual

Post Behavior
When enabled (default), your computer starts more quickly because it skips certain configurations and tests.
Fast
Boot
Enables or disables the NumLock feature when your computer starts.
NumLock
LED
When enabled (default), this option activates the numeric and mathematical features shown at the top of
each key. When disabled, this option activates the cursor-control functions labeled on the bottom of each key
Allows you to specify the function keys to display on the screen when the computer starts.
POST
Hotkeys
Enable F2 = Setup (enabled by default)
Enable F12 = Boot menu (enabled by default)
Enables or disables keyboard error reporting when the computer starts.
Keyboard
Errors
This option is enabled by default.
System Logs
BIOS Events Displays the system event log and allows you to:
Clear Log
Mark all Entries

Boot Sequence

This feature allows you to change the Boot Device Property for devices.

Option Settings

Onboard USB Floppy Drive — The computer attempts to boot from the floppy drive.
Onboard SATA Hard Drive — The computer attempts to boot from the hard drive.
USB Device — The computer attempts to boot from a removable device, such as a USB key.
CD/DVD — The computer attempts to boot from the disc drive.

Changing the Boot Sequence for the Current Boot

You can use this feature, for example, to restart your computer to a USB device, such as a floppy drive, 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 F12 = Boot Menu appears in the upper-right corner of the screen, 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 and try again.
4. The Boot Menu appears, listing all available boot devices.
5. Use the arrow keys to select the appropriate device (for the current boot only).
NOTE:
To boot to a USB device, the device must be bootable. To ensure that a device is bootable, check the device
documentation.