MSI E350IS-E45 - Manual (Page 22)

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Save Changes and Reset
use this item to save changes and reset the system.
Save Changes
use this item to save changes.
discard Changes
use this item to abandon all changes.
Restore defaults
use this item to load the optimized default values set by the BioS vendor.
== Boot override ==
the installed storage devices will appear on this menu, you can select one of them
be a boot device.
Built-in eFi Shell
use this item to enter the eFi Shell.