Lenovo 4221, 4220, 4222, 4215 Selecting or changing the startup device sequence, Advanced settings

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 53.

2.From the Setup Utility program main menu, select Startup.

3.Select the devices for the Primary Boot Sequence, the Automatic Boot Sequence, and the Error Boot Sequence. Read the information displayed on the right side of the screen.

4.Press F10 to save and exit the Setup Utility program. See “Exiting from the Setup Utility program.”

Advanced settings

On some computer models, the Advanced menu includes a setting to enable or disable HyperThreading. This feature works only with HyperThreading-aware operating systems, such as the Windows 7 operating system and the Windows Vista operating system. The default setting for HyperThreading is enabled.

However, if you are not using a HyperThreading-aware operating system and the setting for HyperThreading is Enabled, your computer performance might be degraded. Therefore, you should always set HyperThreading to Disabled unless you are sure your operating system supports HyperThreading.

Exiting from the Setup Utility program

After you finish viewing or changing settings, press Esc to return to the Setup Utility program main menu. You might have to press Esc several times. Then, do one of the following:

vIf you want to save the new settings, press F10 to save and exit the Setup Utility program.

vIf you do not want to save the settings, select Exit → Discard Changes and Exit.

vIf you want to return to the default settings, press F9 to load the default settings.

56User Guide