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Table 10-1
Troubleshooting steps for nonvolatile memory usage (continued)
Nonvolatile
memory type
Amount (Size)
System BIOS
9 MB
Intel Management
1.5 MB or 7 MB
Engine Firmware
(present only in
select Elite or Z
models. For more
information, go to
http://www.hp.com/
support. Select
Find your
product, and then
follow the on-
screen
instructions.)
Bluetooth flash
2 Mb
(select products
only)
802.11 WLAN
4 kilobit to 8
EEPROM
kilobit
Webcam (select
64 kilobit
products only)
Does this
Does this
memory
memory
store
retain data
customer
when power
data?
is removed?
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Yes
What is the
purpose of this
How is data entered into this
memory?
memory?
Stores system
System BIOS code is
BIOS code and
programmed at the factory.
computer
Code is updated when the
configuration
system BIOS is updated.
data.
Configuration data and
settings are entered using
the Computer Setup (BIOS) or
a custom utility.
Stores
Management Engine Code is
Management
programmed at the factory.
Engine Code,
Code is updated via Intel
Settings,
secure firmware update
Provisioning
utility. Unique Provisioning
Data and iAMT
Data can be entered at the
third-party data
factory or by an
store.
administrator using the
Management Engine (MEBx)
setup utility. The third-party
data store contents can be
populated by a remote
management console or local
applications that have been
registered by an
administrator to have access
to the space.
Stores
Bluetooth flash is
Bluetooth
programmed at the factory.
configuration
Tools for writing data to this
and firmware.
memory are not publicly
available but can be obtained
from the silicon vendor.
Stores
802.11 WLAN EEPROM is
configuration
programmed at the factory.
and calibration
Tools for writing data to this
data.
memory are not made public.
Stores webcam
Webcam memory is
configuration
programmed using a utility
and firmware.
from the device
manufacturer that can be run
from Windows.
How is this memory
write-protected?
NOTE:
Writing data to
this ROM in an
inappropriate manner can
render the computer non-
functional.
A utility must be used for
writing data to this
memory and is available
on the HP website; go to
http://www.hp.com/
support. Select Find your
product, and then follow
the on-screen
instructions.
The Intel chipset is
configured to enforce
hardware protection to
block all direct read/write
access to this area. An
Intel utility must be used
for updating the
firmware. Only firmware
updates digitally signed
by Intel can be applied
using this utility.
A utility must be used for
writing data to this
memory and is made
available through newer
versions of the driver
whenever the flash
requires an upgrade.
A utility must be used for
writing data to this
memory and is typically
not made available to the
public unless a firmware
upgrade is necessary to
address a unique issue.
A utility must be used for
writing data to this
memory and is typically
not made available to the
public unless a firmware
Nonvolatile memory usage
93
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