Forbidden Signatures
Update
Select Yes to load the DBX from the manufacturer's defaults. Select No to load the DBX
from a file.
Append
Select Yes to add the DBX from the manufacturer's defaults list to the existing DBX.
Select No to load the DBX from a file.
Authorized TimeStamps
Update
Select Yes to load the DBT from the manufacturer's defaults. Select No to load the DBT
from a file.
Append
Select Yes to add the DBT from the manufacturer's defaults list to the existing DBT. Select
No to load the DBT from a file.
OsRecovery Signature
Update
Select Yes to load the DBR from the manufacturer's defaults. Select No to load the DBR
from a file.
Append
Select Yes to add the DBR from the manufacturer's defaults list to the existing DBR.
Select No to load the DBR from a file.
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Chapter 4: UEFI BIOS