Service Reference Guide, dx2000 ST
371411-001
2–7
Setup Utilities and Diagnostics Features
Security
(continued)
Password Options
(This selection will
appear only if a
power-on
password is set.)
Allows you to specify whether the password is required for
warm boot (
CTRL+ALT+DEL
).
See the
Desktop Management Guide
for more information.
Embedded
Security*
Allows you to set up a password and enable/disable the
embedded Security device.
See the
Desktop Management Guide
for more information.
System IDs
Allows you to set:
• Asset tag (18-byte identifier) and ownership Tag (80-byte
identifier displayed during POST).
See Chapter 3, Desktop Management, in this Guide.
• Chassis serial number or Universal Unique Identifier (UUID)
number. The UUID can only be updated if the current
chassis serial number is invalid. (These ID numbers are
normally set in the factory and are used to uniquely identify
the system.)
Keyboard locale setting (for example, English or German) for
System ID entry.
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
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.
Save Master Boot
Record*
Saves a backup copy of the Master Boot Record of the current
bootable disk.
✎
Only appears if MBR Security is enabled.
*Option supported on select models.
Heading
Option
Description
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