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ASUS Z97M-PLUS
3-51
Chapter 3
Delete KEK
Allows you to delete the KEK from your system. Once the KEK is deleted,
the db and the dbx cannot be updated in the operating system.
Load Default KEK
Select Yes to load the system default KEK or select No to load a
downloaded KEK from a USB storage device.
Append Default KEK
Select Yes to append the system default KEK or select No to append a
downloaded additional KEK from a USB storage device for the db and dbx
management.
The KEK le must be formatted as a UEFI variable structure with time-based authenticated
variable.
DB Management
The db (Authorized Signature database) lists the signers or images of UEFI
applications, operating system loaders, and UEFI drivers that you can load on the
single computer.
Delete the db
Allows you to delete the db le from your system. Doing so may cause boot
failures.
Load Default db
Select Yes to load the system default db or select No to load a downloaded
db from a USB storage device.
Append Default db
Select Yes to append the system default db or select No to append a
downloaded additional db from a USB storage device to load certain
customized UEFI executable les.
• The db le must be formatted as a UEFI variable structure with time-based
authenticated variable.
• UEFI executable les include UEFI boot devices, drivers and applications.
dbx Management
The dbx (Revoked Signature database) lists the forbidden images of db items that are
no longer trusted and cannot be loaded.
Delete the dbx
Allows you to delete the DBX le from your system. Doing so may expose
the system to security threats.
Load Default dbx
Select Yes to load the system default dbx or select No to load a
downloaded dbx from a USB storage device.