Supermicro X12 Secure Boot Configuration Instructions page 25

Secure Boot Settings
Forbidden Signatures
Forbidden Signature Database (DBX) contains forbidden certificates and digital signatures.
The options are Details, Export, Update, Append, and Delete. Select Details to display
detailed information of Forbidden Signatures. Select Export to save the current DBX to a
FAT-formatted USB flash drive. Select Update to load the manufacturer defaults or load DBX
from a file in an external device. Select Append to add variables to the existing DBX. Select
Delete to clear the current DBX or to delete only one certificate from the key database.
(Refer to page 16 for the Export process. Refer to pages 17, 18, 19, and 20
for the Update process. Refer to pages 21 and 22 for the Append process. Refer to
page 23 for the Delete process.)
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