Produtos da Marca Dell

 Page4



DifferencesbetweenBIOSandUEFIBootModes

Thefollowingtablehighlightsthedifferencesbetweenthebootmodes.

Feature

BootMode

BIOS UEFI

OperatingSystemSupport Compatiblewithoperatingsystems

thatdonotsupportUEFI.Allthe

currentandlegacyoperationsystems

canbeinstalledinthisbootmode.

MustsupportUEFI

BIOSPOST<F11>Boot

ManagerHotKey

EntersBIOSBootManager EntersUEFIBootManager

BootOrderControl ViaBIOSSetupUtility ViaUEFIBootManager

USBEmulation SupportedviaBIOSSetupUtility Notneeded

DefaultBootOrder TraditionalDellBIOSdefaultboot

order

None

BootOptions LegacyBIOSbootstoadrive.Support

formulti‐bootdriverequiresaboot

loader.

InUEFImode,thereisaconceptofa

bootfile.Thisallowsmultiplefilestobe

addedasabootoptiononasingledrive.



UEFIBootOptions

ThewaybootoptionsworkinUEFImodediffersfromthatofthelegacyBIOS.TheUEFIbootoption:

• Specifiesafileonadriveasaboottarget(vs.adriveasinlegacyBIOS).

• Isautomaticallycreatedbytheoperatingsystemduringinstallationandpointstoits

bootfile.

• Providesapredeterminedbootpathforremovablemedia.

• CanbemanuallyaddedbytheuserviatheUEFIBootManager.

• Pointstoaspecificbootfile;henceasystemformatisnotnecessarytomakeadevicebootable.

AutomaticandManualBootOptions

InUEFI

mode,bootoptionsareautomaticallyaddedforremovabledevices.Theseautomaticallyaddedboot 

optionscannotbedeleted.OperatingSysteminstallationautomaticallyaddsabootoptionthatpointstothe

OperatingSystemBootloader.BootoptionscanalsobeaddedmanuallybyusingtheUEFIBootManager.Whether

optionsareaddedmanually

orbytheoperatingsystem,theycanbedeletedusingUEFIBootManager.

Multiplebootoptionsperdevice,orperfile,areallowed.Youmaywanttohavetwobootoptionsforthesame

filewithdifferentinputparameters,suchasadebugparameter.WheninstallingaUEFI‐awareoperating

system,

theinstallationprocesswilladdacorrespondingbootoption.

BootingtoaRemovableMediaDevice

Tomakearemovabledevicebootable,theUEFIapplicationsimplyneedstoberenamedtoBOOTx64.EFI(case

insensitive)andplacedinthe\EFI\BOOTdirectory.

Whenaremovabledevice,suchasaUSBkey,isdetectedinUEFIBootMode,abootoptionisautomaticallyadded



topointtothefollowinglocation:

\EFI\BOOT\BOOTx64.EFI