Desktop Management Guide
40 www.hp.com Desktop Management Guide
Desktop Management Guide
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 
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 > Disabled.
4. Before exiting, click File > Save Changes and Exit.
Cable Lock Provision
The rear panel of the computer accommodates a cable lock so that the 
computer can be physically secured to a work area.
For illustrated instructions, please see the Hardware Reference Guide 
on the Documentation CD.










