Before You Partition Or Format The Current Bootable Disk; Cable Lock Provision; Fault Notification And Recovery; Surge-Tolerant Power Supply - HP Dx5150 - Compaq Business Desktop Reference Manual

3.5.5 Before You Partition or Format the Current Bootable Disk

Ensure that MBR Security is disabled before you change partitioning or formatting of the current
bootable disk. Some disk utilities, such as FDISK and FORMAT, attempt to update the MBR. If
MBR Security is enabled when you change partitioning or formatting of the disk, you may
receive error messages from the disk utility or a warning from MBR Security the next time the
computer is turned on or restarted.
To disable 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
Setup. Press
✎
If you do not press the
F10
and hold the
If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.
3. Select Advanced BIOS Features > MBR Security and press
4. In the MBR Security Pop-up box, use the down arrow key to select Disabled.
Enter.
5. Press
6. Before exiting, on the File menu, click Save and Exit Setup.

3.5.6 Cable Lock Provision

The rear panel of the computer accommodates a cable lock so that you can physically secure the
computer to a work area.
For illustrated instructions, see the Removal and Replacement Chapter for the specific chassis.

3.6 Fault Notification and Recovery

Fault Notification and Recovery features combine innovative hardware and software technology
to prevent the loss of critical data and minimize unplanned downtime.
When a fault occurs, the computer displays a Local Alert message containing a description of the
fault and any recommended actions. You can then view current system health by using the HP
Client Manager Software. If the computer is connected to a network managed by HP Insight
Manager, HP Client Manager Software, or other system management applications, the computer
also sends a fault notice to the network management application.

3.6.1 Surge-Tolerant Power Supply

An integrated surge-tolerant power supply provides greater reliability when the computer is hit
with an unpredictable power surge. This power supply is rated to withstand a power surge of up
to 2000 volts without incurring any system downtime or data loss.

3.6.2 Thermal Sensor

The thermal sensor is a hardware and software feature that tracks the internal temperature of the
computer. This feature displays a warning message when the normal range is exceeded, which
gives you time to take action before internal components are damaged or data is lost.
Service Reference Guide, dx5150
Enter
to bypass the title screen, if necessary.
F10
key at the appropriate time, you must restart the computer and press
key again to access the utility.
361685-001
Desktop Management
F10
key until you enter Computer
Enter.
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