Clearing Cmos Settings; Boot Options; Changing Boot Sequence For The Current Boot; Changing Boot Sequence For Future Boots - Dell Vostro A100 Service Manual

This feature allows you to change the boot sequence for devices.

Boot Options

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
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message.
CD/DVD Drive — The computer attempts to boot from the CD/DVD drive. If no CD/DVD is in the drive, or if the CD/DVD has no operating system, the
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computer generates an error message.
USB Flash Device — Insert the memory device into a USB port and restart the computer. When F12 = Boot Menu appears in the upper-right corner of
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the screen, press <F12>. 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.

Changing Boot Sequence for the Current Boot

You can use this feature, for example, to tell the computer to boot from the CD drive so that you can run the Dell Diagnostics on the Drivers and Utilities media,
but you want the computer to boot from the hard drive when the diagnostic tests are complete. You can also use this feature to restart your computer to a
USB device such as a USB floppy drive, or a memory key.
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 F2 = Setup, 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.
The Boot Device Menu appears, listing all available boot devices. Each device has a number next to it.
4. On the Boot Device Menu choose the device you want to boot from.
For example, if you are booting to a USB memory key, highlight USB Flash Device and press <Enter>.
NOTE: To boot to a USB device, the device must be bootable. To ensure your device is bootable, check the device documentation.

Changing Boot Sequence for Future Boots

1. Enter system setup (see Entering System
2. Use the arrow keys to highlight the Boot Device Configuration 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 plus (+) or minus (–) to change the boot priority of device.
Clearing CMOS Settings
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer.
1. Follow the procedures in Before You
CAUTION: The computer must be disconnected from the electrical outlet to clear the CMOS setting.
2. Remove the computer cover (see
3. Reset the current CMOS settings:
a. Locate the 2-pin CMOS jumper plug (CLR_CMOS) on the system board (see
b. Remove the jumper plug from the CMOS jumper (CLR_CMOS) pins 2 and 3.
Setup).
Begin.
Replacing the Computer Cover).
System Board Components).