Lenovo C315 All-In-One - Manual (Page 29)

Hardware Maintenance Manual
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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 16).
2. Select Start Up.
3. Select Primary Boot Sequence.
4. Select the drives for the 1st Boot Device, the 2nd Boot Device, the 3rd
Boot Device and the 4th Boot Device.
5. Press ESC to return the Primary Boot Sequence.
6. Press ESC to return the Start Up and then 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.