Supermicro X12 Secure Boot Configuration Instructions page 27

Secure Boot Settings
OsRecovery Signatures
OsRecovery Signatures Database (DBR) contains recovery variables that are authorized by
Secure Boot. The options are Details, Export, Update, Append, and Delete. Select Details
to display detailed information of OsRecovery Signatures. Select Export to save the current
DBR to a FAT-formatted USB flash drive. Select Update to load the manufacturer defaults
or load DBR from a file in an external device. Select Append to add variables to the existing
DBR. Select Delete to clear the current DBR 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.)
27