ThinkPad E555 - Restart Menu; Updating the UEFI BIOS

Table5.Startupmenuitems(continued)
Menuitem
SelectionComments
•Yes
bootabledevicesthatdonothavethe
UEFI-enabledoperatingsystem.
CompatibilitySupportModule(CSM)
isrequiredforstartingthelegacy
operatingsystem.IfyouselectUEFI
Only,CSMSupportisselectable.
ForBothorLegacyOnlymode,CSM
Supportisnotselectable.
BootMode
•Quick
•Diagnostics
ScreenduringthePOST:
•Quick:TheThinkPadLogoscreen
isdisplayed.
•Diagnostics:Testmessagesare
displayed.
Note:YoucanalsoenterDiagnostic
modebypressingEscduringPOST.
OptionKeyDisplay
•Disabled
•Enabled
IfyouselectDisabled,thenthe
message“Tointerruptnormalstartup,
pressEnter”isnotdisplayedduring
thePOST.
BootDeviceListF12Option
•Disabled
•Enabled
IfyouselectEnabled,theF12key
isrecognizedandtheBootMenu
windowisdisplayed.
BootOrderLock
•Disabled
•Enabled
IfyouselectDisabled,yourcomputer
willbootusingthedefaultpriority.If
youselectEnabled,yourcomputer
willbootusingthepriorityyouhave
customized.
Restartmenu
ToexittheThinkPadSetupprogramandrestartthecomputer,selectRestartfromtheThinkPadSetupmenu.
Thefollowingsubmenuitemsaredisplayed:
•ExitSavingChanges:Savethechangesandrestartthecomputer.
•ExitDiscardingChanges:Discardthechangesandrestartthecomputer.
•LoadSetupDefaults:Restoretothefactorydefaultsettings.
Note:EnableOSOptimizedDefaultstomeettheWindows8.1certificationrequirements.Whenyou
changethissetting,someothersettingsarechangedautomatically,suchasCSMSupport,UEFI/Legacy
Boot,SecureBoot,andSecureRollBackPrevention.
•DiscardChanges:Discardthechanges.
•SaveChanges:Savethechanges.
UpdatingtheUEFIBIOS
TheUEFIBIOSisthefirstprogramthatthecomputerrunswhenthecomputeristurnedon.TheUEFIBIOS
initializesthehardwarecomponents,andloadstheoperatingsystemandotherprograms.
76UserGuide