HP 280 G1 Maintenance And Service Manual page 65

Table 6-3 Computer Setup—Security (continued)
System Security (these NOTE:
options are hardware
Data Execution Prevention (enable/disable) - Helps prevent operating system security breaches. Default
dependent)
is enabled.
SVM CPU Virtualization (enable/disable) - Controls the virtualization features of the processor. Changing
this setting requires turning the computer off and then back on. Default is disabled.
OS management of Embedded Security Device (enable/disable) - This option allows the user to limit OS
control of the Embedded Security Device. Default is enabled. This option is automatically disabled if
Trusted Execution Technology is enabled.
●
●
●
DriveLock Security Allows you to assign or modify a master or user password for hard drives. When this feature is enabled,
the user is prompted to provide one of the DriveLock passwords during POST. If neither is successfully
entered, the hard drive will remain inaccessible until one of the passwords is successfully provided during
a subsequent cold-boot sequence.
NOTE:
attached to the system.
Secure Boot ●
Configuration
●
●
●
Available options are displayed depending on system configuration.
Reset of Embedded Security Device through OS (enable/disable) - This option allows the user to
limit the operating system ability to request a Reset to Factory Settings of the Embedded Security
Device. Default is disabled.
NOTE: To enable this option, a Setup password must be set.
No PPI provisioning (Windows 8.1 only) - This option lets you set Windows 8.1 to bypass the PPI
(Physical Presence Interface) requirement and directly enable and take ownership of the TPM on
first boot. You cannot change this setting after TPM is owned/initialized, unless the TPM is reset.
Default is disabled for non-Windows 8.1 systems, and enabled for Windows 8.1.
Allow PPI policy to be changed by OS. Enabling this option allows the operating system to execute
TPM operations without Physical Presence Interface. Default is disabled.
NOTE: To enable this option, a Setup password must be set.
This selection will only appear when at least one drive that supports the DriveLock feature is
Legacy Support—Enable/Disable. Allows you to turn off all legacy support on the computer,
including booting to DOS, running legacy graphics cards, booting to legacy devices, and so on. If set
to disable, legacy boot options in Storage > Boot Order are not displayed. Default is enabled.
Secure Boot—Enable/Disable. Allows you to make sure an operating system is legitimate before
booting to it, making Windows resistant to malicious modification from preboot to full OS booting,
preventing firmware attacks. UEFI and Windows Secure Boot only allow code signed by pre-
approved digital certificates to run during the firmware and OS boot process. Default is disabled,
except for Windows 8.1 systems which have this setting enabled. Secure Boot enabled also sets
Legacy Support to disabled.
Key Management—This option lets you manage the custom key settings.
◦
Clear Secure Boot Keys—Don't Clear/Clear. Allows you to delete any previously loaded custom
boot keys. Default is Don't Clear.
◦
Key Ownership—HP Keys/Custom Keys. Selecting Custom Mode allows you to modify the
contents of the secure boot signature databases and the platform key (PK) that verifies
kernels during system start up, allowing you to use alternative operating systems. Selecting
HP Keys causes the computer boot using the preloaded HP-specific boot keys. Default is HP
Keys.
Fast Boot—Enable/Disable. Fast boot disables the ability to interrupt boot, such as pressing f keys
to access items before the operating system loads. Default is disabled.
NOTE: If Windows 8.1 detects a serious error, it will interrupt the boot process automatically and
display advanced boot options.
From Windows 8.1, you can press
a device or troubleshoot your computer.
Shift and select Restart to access the screen that lets you boot to
Computer Setup (F10) Utilities 57