Master Boot Record Security - HP Point of Sale rp5000 Setup Manual

Computer Setup (F10) Utility Guide
Computer Setup (Continued)
Heading
Security
(continued)
✎
Support for Computer Setup options may vary depending on your specific hardware
configuration.
12
Option
Master Boot Record
Security
www.hp.com
Description
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 on 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 (F10) Utility Guide