Alienware X51 Service Manual

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Changing boot sequence for the current boot

If you are booting from a USB device, connect the USB device to a USB port.
Turn on (or restart) your computer.
When F2 Setup, F12 Boot Options appear in the lower-right corner of the screen, press F12.
- NOTE: 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.
The Boot Options appears, listing all available boot devices.
On the Boot Options, select the device you want to boot from and press Enter. For example, if you are booting to a USB hard drive, highlight USB Hard Disk and press Enter.