Compaq D300v Compaq Evo D300v User`s Guide - Page 46

MBR, or disabling MBR Security. You must - evo bios update

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Setup Utility (Intel Celeron Models) Computer Setup (Continued) Heading Option Description Security (continued) 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 current 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. Support for Computer Setup options may vary depending on your specific hardware configuration. *Option not supported on all products. Compaq Evo D300v User's Guide 4-11

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Setup Utility (Intel Celeron Models)
Computer Setup
(Continued)
Heading
Option
Description
Security
(continued)
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
current 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.
Support for Computer Setup options may vary depending on your specific hardware
configuration.
*Option not supported on all products.
Compaq Evo D300v User’s Guide
4-11