Master Boot Record Security - HP xw4000 Service & Reference Manual

Desktop Management
Using the Smart Cover FailSafe Key
If you enable the Smart Cover Lock and cannot enter your password to disable the lock, you will
need a Smart Cover FailSafe Key to open the computer cover. You will need the key in any of the
following circumstances:
Power outage
Startup failure
PC component failure (such as processor or power supply)
Forgotten password
Ä CAUTION: The Smart Cover FailSafe Key is a specialized tool available from HP. Be prepared; order
this key before you need one.
To obtain the FailSafe Key, do any one of the following:
Contact your authorized HP reseller or service provider.
Refer to the HP web site (www.hp.com) for ordering information.
Call the appropriate number listed in the warranty.
For more information about using the Smart Cover FailSafe Key, consult the Hardware
Reference Guide.

3.4.7 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 may prevent 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 the
Computer.
2. When the F10 Setup message appears in the lower-right corner of the screen, press the F10
key. Press Enter to bypass the title screen, if necessary.
If you do not press the F10 key while the message is displayed, you must restart the computer to
access the utility.
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.
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