Lenovo ThinkPad E570 - Startup Menu

SecureBoot
•SecureBoot
Values:Disabled,Enabled
Descriptions:Enablethisoptiontopreventunauthorizedoperatingsystemsfromloadingwhenyou
turnonthecomputer.
DisabledisthedefaultvaluewhenOSOptimizedissettoDisabled.Enabledisthedefaultvaluewhen
OSOptimizedissettoEnabled.
Note:ToenableSecureBoot,youneedtosetthestartupsettingasUEFIOnlyandsetCSMSupport
asNo.
•PlatformMode
Values:SetupMode,UserMode
Descriptions:Specifythesystemoperatingmode.
•SecureBootMode
Values:StandardMode,CustomMode
Descriptions:SpecifytheSecureBootmode.
•ResettoSetupMode
Descriptions:ThisoptionisusedtoclearthecurrentplatformkeyandputthesystemintoSetupMode.
YoucaninstallyourownplatformkeyandcustomizetheSecureBootsignaturedatabasesinSetup
Mode.SecureBootmodewillbesettoCustomMode.
•RestoreFactoryKeys
Descriptions:UsethisoptiontorestoreallkeysandcertificatesinSecureBootdatabasestothefactory
defaults.AnycustomizedSecureBootsettingswillbeerased,andthedefaultPlatformKeywillbe
re-establishedalongwiththeoriginalsignaturedatabasesincludingcertificatefortheoperatingsystems.
•ClearAllSecureBootKeys
Descriptions:UsethisoptiontoclearallkeysandcertificatesinSecureBootdatabasesandinstall
yourownkeysandcertificates.
Intel(R)SGX
•Intel(R)SGXControl
Values:Disabled,Enabled,SoftwareControlled
Descriptions:EnableordisabletheIntelSoftwareGuardExtensions(SGX)function.Ifyouselect
SoftwareControlled,SGXwillbecontrolledbytheoperatingsystem.
•ChangeOwnerEPOCH
Value:Enter
Descriptions:ChangeOwnerEPOCHtoarandomvalue.UsethisoptiontoclearSGXuserdata.
Note:Thissub-menuisavailableonmodelswithanIntelCPU.
Startupmenu
Note:TheBIOSmenuitemsmightchangewithoutnotice.Dependingonthemodel,thedefaultvalue
mightvary.
•Boot
Descriptions:Definethestartupsequence.
•NetworkBoot
Chapter6.Advancedconfiguration55