Computer Setup (F10) Utility Guide

Computer Setup (F10) Utility Guide www.hp.com 15
Computer Setup (F10) Utility
Security
(continued)
Data Execution
Prevention
Enable/Disable
Data Execution Prevention Mode helps prevent
OS security breaches.
✎
This selection is in effect only if the
processor and operating system being
used comprehend and utilize Data
Execution Prevention Mode.
Master Boot Record
Security
Allows you to enable or disable Master Boot
Record (MBR) Security.
When enabled, the BIOS rejects all requests to
write to the MBR on the current bootable disk.
Each time the computer is powered on or
rebooted, the BIOS compares the MBR of the
current bootable disk to the previously-saved
MBR. If changes are detected, you are given
the option of saving the MBR of the current
bootable disk, restoring the previously-saved
MBR, or disabling MBR Security. You must
know the setup password, if one is set.
✎
Disable MBR Security before intentionally
changing the formatting or partitioning of
the current bootable disk. Several disk
utilities (such as FDISK and FORMAT)
attempt to update the MBR.
If MBR Security is enabled and disk
accesses are being serviced by the BIOS,
write requests to the MBR are rejected,
causing the utilities to report errors.
If MBR Security is enabled and disk
accesses are being serviced by the
operating system, any MBR change will
be detected by the BIOS during the next
reboot, and an MBR Security warning
message will be displayed.
Computer Setup (Continued)
Heading Option Description
✎
Support for specific Computer Setup options may vary depending on the hardware
configuration.