Secure Boot Screen Options; Intel Software Guard Extensions - Dell Precision 3520 Owner's Manual

Option Description
Master Password Allows you to disable master password support. Hard disk password need to be cleared before the setting
Lockout can be changed
● Enable Master Password Lockout (Disabled)

Secure Boot screen options

Option Description
Secure Boot This option enables or disables the Secure Boot feature.
Enable
● Disabled
● Enabled
Default setting: Enabled.
Secure Boot Allows you to change to Secure Boot operation mode, modifies the behavior of the Secure Boot to allow
Mode evaluation or enforcement of UEFI driver signatures. The options are:
● Deployed Mode—Before allowing execution, checks the integrity of UEFI drivers and bootloaders.
● Audit Mode—Performs a signature check but does not block execution of all UEFI drivers and
Default setting: Deployed Mode
Expert Key Allows you to manipulate the security key databases only if the system is in Custom Mode. The Enable
Management 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

Intel Software Guard Extensions

Option Description
Intel SGX Enable This fields specifies you to provide a secured environment for running code/storing sensitive information
in the context of the main OS. The options are:
● Disabled
● Enabled
● Software Controlled: This option is enabled by default.
Enclave Memory This option sets SGX Enclave Reserve Memory Size. The option are:
Size
● 32 MB
● 64 MB
● 128 MB
bootloaders.
NOTE: If you disable the Custom Mode, all the changes that are made are erased and the keys
restore to default settings.
BIOS setup 89