Dell Alienware X51 R2 Owner's Manual - Page 15
Boot Sequence, Boot Options, Changing Boot Sequence for the Current Boot - desktop computer
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Boot Sequence This feature allows you to change the boot sequence for devices. Boot Options • Floppy - The computer attempts to boot from the floppy disk drive. If no operating system is on the drive, the computer generates an error message. • Hard Drive - The computer attempts to boot from the primary hard drive. If no operating system is on the drive, the computer generates an error message. • CD/DVD/CD-RW Drive - The computer attempts to boot from the optical drive. If no disc is in the drive, or if the disc is not bootable, the computer generates an error message. • USB Storage Device - Insert the memory device into a USB connector and restart the computer. When F12 Boot Options appear in the lower-right corner of the screen, press . The BIOS detects the device and adds the USB flash option to the boot menu. NOTE: To boot to a USB device, the device must be bootable. To ensure that your device is bootable, check the device documentation. • Network - The computer attempts to boot from the network. If no operating system is found on the network, the computer generates an error message. Changing Boot Sequence for the Current Boot You can use this feature to change the current boot sequence, for example, to boot from the 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 connector. 2 Turn on (or restart) your computer. 3 When F2 Setup, F12 Boot Options appear in the lower-right corner of the screen, press . 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. 4 On the Boot Options choose the device you want to boot from. For example, if you are booting to a USB hard disk, highlight USB Hard Disk and press . System Setup | 15