Desktop Management Guide

38 www.hp.com Desktop Management Guide
Desktop Management Guide
Master Boot Record Security
The Master Boot Record (MBR) contains information needed to
successfully boot from a disk and to access the data stored on the
disk. Master Boot Record Security detects and reports unintentional
or malicious changes to the MBR, such as those caused by some
computer viruses or by the incorrect use of certain disk utilities.
It also allows you to recover the “last known good” MBR, should
changes to the MBR be detected when the system is restarted.
To enable MBR Security, complete the following steps:
1. Turn on or restart the computer. If you are in Windows, click
Start > Shut Down > Restart.
2. As soon as the computer is turned on, press and hold the
F10 key
until you enter Computer Setup. Press
Enter to bypass the title
screen, if necessary.
✎
If you do not press the F10 key at the appropriate time, you must
restart the computer and press and hold the
F10 key again to access
the utility.
If you are using a PS/2 keyboard, you may see a Keyboard Error
message—disregard it.
3. Select Security > Master Boot Record Security > Enabled.
4. Select Security > Save Master Boot Record.
5. Before exiting, click File > Save Changes and Exit.
When MBR Security is enabled, the BIOS prevents any changes
being made to the MBR of the current bootable disk while in
MS-DOS or Windows Safe Mode.
✎
Most operating systems control access to the MBR of the current
bootable disk; the BIOS cannot prevent changes that may occur while
the operating system is running.