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Appendix F: Secure Boot Settings
OsRecovery Signatures
OsRecovery Signatures Database (DBR) contains secure boot authorized recovery vari-
ables. 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 factory defaults or
load DBR from a file on the external device. Select Append to add variables to the exist-
ing DBR. Select Delete to clear the current DBR or to delete only one certificate from the
key database. (Refer to page 218 for the Export process. Refer to pages 219, 220,
221, and 222 for the Update process. Refer to pages 223 and 224 for the Append
process. Refer to page 225 for the Delete process.)
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