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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 fl ash drive. Select Update to load the factory defaults or
load DBR from a fi le 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 certifi cate 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.)
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