Lenovo ThinkPad E555 - Startup Menu

Table4.Securitymenuitems(continued)
Menuitem
SubmenuitemSelectionComments
PlatformMode
•SetupMode
•UserMode
Specifythesystem
operatingmode.
SecureBootMode•StandardMode
•CustomMode
Specifythesystem
operatingmode.
ResettoSetupMode
•Yes
•No
Thisoptionisusedtoclear
thecurrentplatformkey
andputthesysteminto
SetupMode.Youcan
installyourownplatform
keyandcustomizethe
SecureBootsignature
databasesinSetupMode.
SecureBootmodewillbe
settoCustomMode.
RestoreFactorykeys•Yes
•No
Thisoptionisusedto
restoreallkeysand
certificatesinSecure
Bootdatabasestofactory
defaults.Anycustomized
SecureBootsettings
willbeerased,andthe
defaultplatformkeywillbe
re-establishedalongwith
theoriginalsignature
databasesincluding
certificatefortheWindows
8.1operatingsystem.
ClearAllSecureBootKeys
•Yes
•No
Thisoptionisusedtoclear
allkeysandcertificatesin
SecureBootdatabases.
Youcaninstallyourown
keysandcertificatesafter
selectingthisoption.
Startupmenu
Tochangethestartupsettingsofyourcomputer,selecttheStartuptabfromtheThinkPadSetupmenu.
Attention:
•Afteryouchangethestartupsequence,ensurethatyouselectacorrectdeviceduringacopy,asave,ora
formatoperation.Otherwiseyourdatamightbeerasedoroverwritten.
•IfyouareusingtheBitLockerdriveencryption,donotchangethestartupsequence.BitLockerdrive
encryptionlocksthecomputerfromstartingoncedetectsthechangeofstartupsequence.
Tochangethestartupsequencetemporarilysothatthecomputerstartsfromadesireddrive,dothefollowing:
1.Restartthecomputer.WhentheThinkPadlogoisdisplayed,presstheF12key.
2.Selectthedevicethatyouwantthecomputertostartfrom.
Note:TheBootmenuwillbedisplayedifthecomputercannotstartfromanydevicesortheoperating
systemcannotbefound.
74UserGuide