Appendix F: Secure Boot Settings
189
Forbidden Signatures
Forbidden Signature Database (DBX), which is the inverse of DB, 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 factory defaults or load DBX from a file on the 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
180 for the Export process.
Refer to pages 181, 182, 183, and 184 for the Update process. Refer to pages 185
and 186 for the Append process. Refer to page 187 for the Delete process.)
