Dell OptiPlex 5050 Owner's Manual page 50

Option
Chassis Intrusion
CPU XD Support
OROM Keyboard Access
Admin Setup Lockout
Table 9. Secure Boot
Option
Secure Boot Enable
Expert key Management
50 System setup
Description
• Deactivate
• Disable
• Activate
Allows you to control the chassis intrusion feature. You can set this option to:
• Enabled
• Disabled
• On-Silent
Allows you to enable or disable the Execute Disable mode of the processor. This option is enabled by
default.
This option determines whether users are able to enter Option ROM Configuration screens via
hotkeys during boot. Specifically, these settings are capable of preventing access to Intel RAID (CTRL
+I) or Intel Management Engine BIOS Extension (CTRL+P/F12).
• Enabled — User may enter OROM configuration screens via the hotkey.
• One-Time Enable — User may enter OROM configuration screens via the hotkeys on next boot
only. After next boot, the setting will revert to disabled.
• Disable — User may not enter OROM configuration screens via the hotkey.
Allows you to enable or disable the option to enter Setup when an Administrative password is set.
This option is not set by default.
Description
Allows you to enable or disable Secure Boot feature
• Disable
• Enable
Allows you to manipulate the security key databases only if the system is in Custom Mode. The
Enable Custom Mode option is disabled by default. The options are:
• PK
• KEK
• db
• dbx
If you enable the Custom Mode, the relevant options for PK, KEK, db, and dbx appear. The
options are:
• Save to File- Saves the key to a user-selected file
• Replace from File- Replaces the current key with a key from a user-selected file
• Append from File- Adds a key to the current database from a user-selected file
• Delete- Deletes the selected key
• Reset All Keys- Resets to default setting
• Delete All Keys- Deletes all the keys
NOTE: If you disable the Custom Mode, all the changes made will be erased and the
keys will restore to default settings.