HP Sprout Maintenance & Service Manual page 123

Table 6-3 Computer Setup—Security (continued)
System Security (these
options are hardware
dependent)
Secure Boot
Configuration
ENWW
Virtualization Technology (VTx/VTd) (enable/disable). Controls the virtualization features of the
processor. Changing this setting requires turning the computer off and then back on. Default is disabled.
This is a feature of Windows 8.
●
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 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 detects a serious error, it will interrupt the boot process automatically and
display advanced boot options.
From Windows 8, you can press
device or troubleshoot your computer.
Shift and select Restart to access the screen that lets you boot to a
Computer Setup (F10) Utilities 113