Lenovo IdeaCentre B520 - Manual (Page 21)

Chapter 5. Using the Setup Utility
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Selecting or changing the startup device sequence
To view or permanently change the configured startup device sequence,
do the following:
1. Start the Setup Utility program (see Starting the Setup Utility program
on page 15).
2. Select Start Up.
3. Select Primary Boot Sequence, to select or change startup device
sequence by pressing <+> or <-> key to move the device up or down
in the startup sequence. Press the <X> key to excludes or includes a
device to the boot sequence.
4. Press ESC to return to Exit and select Save changes and Exit.
If you have changed these settings and want to return to the default
settings, select Load Optimal Defaults on the Setup Utility menu.
Exiting from the Setup Utility program
When you finish viewing or changing settings, press Esc to return to the
Setup Utility program menu (you might have to press Esc several times).
If you want to save the new settings, select Save changes and Exit before
you exit. Otherwise, your changes will not be saved.