User's Manual

Table Of Contents
Tochangethestartupsequencetemporarilysothatthecomputerstartsfromadesireddrive,dothefollowing:
1.Turnoffthecomputer.
2.Turnonthecomputer.WhentheThinkPadlogoisdisplayed,pressF12.
3.Selectthedevicethatyouwantthecomputertostartfrom.
Note:TheBootmenuwillbedisplayedifthecomputercannotstartfromanydevices,ortheoperating
systemcannotbefound.
ThefollowingtableliststheStartupmenuitems.Defaultvaluesareinboldface.Themenuitemsmight
changewithoutnotice.Dependingonthemodel,thedefaultvaluemightvary.
Note:Someitemsaredisplayedonthemenuonlyifthecomputersupportsthecorrespondingfeatures.
Table5.Startupmenuitems
MenuitemValue
Comments
Boot
Selectthebootdevicewhenyou
pressthepowerbuttontoturnonthe
computer.
NetworkBoot
USBCD
USBFDD
NVMe0
ATAHDD0
USBHDD
PCILAN
Selectthebootdevicewhenthesystem
wakesfromLAN.IfWakeOnLANis
enabled,thenetworkadministratorcan
turnonallofthecomputersinaLAN
remotelybyuseofnetworkmanagement
software.
UEFI/LegacyBoot
Both
UEFI/LegacyBootPriority
UEFIFirst
LegacyFirst
UEFIOnly
LegacyOnly
CSMSupport(forUEFIOnly)
Y es
No
Selectsystembootcapability.
Both:Selectpriorityofbootoptions
betweenUEFIandLegacy.
UEFIOnly:Thesystemwillbootfrom
theUEFIenabledoperatingsystem.
LegacyOnly:Thesystemwillboot
fromanyoperatingsystemotherthan
theUEFIenabledone.
Note:IfyouselectUEFIOnly,the
systemcannotbootfromthebootable
devicesthatdonothavetheUEFI
enabledoperatingsystem.
CompatibilitySupportModule(CSM)is
requiredforbootingthelegacyoperating
system.IfyouselectUEFIOnly,CSM
Supportisselectable.ForBothor
LegacyOnlymode,CSMSupportisnot
selectable.
BootMode
Quick
Diagnostics
ScreenduringthePOST:
Quick:TheThinkPadLogoscreenis
displayed.
Diagnostics:Textmessagesare
displayed.
Note:YoualsocanenterDiagnostic
modebypressingEscduringthePOST.
Chapter6.Advancedconfiguration83