Dell PowerEdge R805 Hardware Owner's Manual (PDF) - Page 57

NOTICE, On with Pre-boot Measurements, Activate, No Change

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Table 2-7. System Security Screen Options (continued) Option TPM Security (Off default) TPM Activation TPM Clear (No default) Description Sets the reporting of the Trusted Platform Module (TPM) in the system. When set to Off (default), presence of the TPM is not reported to the operating system. When set to On with Pre-boot Measurements, the system reports the TPM to the operating system and stores the pre-boot measurements (compliant with Trusted Computing Group standards) to the TPM during POST. When set to On without Pre-boot Measurements, the system reports the TPM to the operating system and bypasses pre-boot measurements. Changes the operational state of the TPM. When set to Activate, the TPM is enabled and activated at default settings. When set to Deactivate, the TPM is disabled and deactivated. The No Change state initiates no action. The operational state of the TPM remains unchanged (all user settings for the TPM are preserved). NOTE: This field is read-only when TPM Security is set to Off. NOTICE: Clearing the TPM will cause loss of all encryption keys in the TPM. This option will prevent booting to the operating system and will result in loss of data if the encryption keys cannot be restored. Be sure to back up the TPM keys prior to enabling this option. When set to Yes, all the contents of the TPM are cleared. NOTE: This field is read-only when TPM Security is set to Off. Using the System Setup Program 57

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Using the System Setup Program
57
TPM Security
(
Off
default)
Sets the reporting of the Trusted Platform Module
(TPM) in the system.
When set to
Off
(default), presence of the TPM is not
reported to the operating system.
When set to
On with Pre-boot Measurements
, the
system reports the TPM to the operating system and
stores the pre-boot measurements (compliant with
Trusted Computing Group standards) to the TPM during
POST.
When set to
On without Pre-boot Measurements
, the
system reports the TPM to the operating system and
bypasses pre-boot measurements.
TPM Activation
Changes the operational state of the TPM.
When set to
Activate
, the TPM is enabled and activated
at default settings.
When set to
Deactivate
, the TPM is disabled and
deactivated.
The
No Change
state initiates no action. The operational
state of the TPM remains unchanged (all user settings for
the TPM are preserved).
NOTE:
This field is read-only when
TPM Security
is set to
Off
.
TPM Clear
(
No
default)
NOTICE:
Clearing the TPM will cause loss of all
encryption keys in the TPM. This option will prevent
booting to the operating system and will result in loss
of data if the encryption keys cannot be restored. Be
sure to back up the TPM keys prior to enabling this
option.
When set to
Yes
, all the contents of the TPM are cleared.
NOTE:
This field is read-only when
TPM Security
is set to
Off
.
Table 2-7.
System Security Screen Options
(continued)
Option
Description