HP EliteBook 820 G1 - Non-Volatile Memory Usage

Non-volatile memory usage
Non Volatile
Memory
Type
Amount
(Size)
Does this
memory
store
customer
data?
Does this
memory
retain data
when power
is removed?
What is the
purpose of
this
memory?
How is data
input into
this
memory?
How is this
memory
write
protected?
HP Sure Start
flash (select
models only)
2 MB No Yes Provides
protected
backup of
critical System
BIOS code, EC
firmware, and
critical PC
configuration
data for select
platforms that
support HP Sure
Start.
For more
information, see
Using HP Sure
Start (select
models only)
on page 172.
Data cannot be
written to this
device via the
host processor.
The content is
managed solely
by the HP Sure
Start Embedded
Controller.
This memory is
protected by the
HP Sure Start
Embedded
Controller.
Real Time Clock
(RTC) battery
backed-up
CMOS
configuration
memory
(CMOS)
256 Bytes No Yes Stores system
date and time
and limited
keyboard
controller data.
Using the F10
Setup utility or
changing the
Microsoft
Windows date
and time.
This memory is
not write-
protected. HP
recommends
password
protecting the
F10 Setup
utility.
Controller (NIC)
EEPROM
64 KBytes (not
customer
accessible)
No Yes Store NIC
configuration
and NIC
firmware.
Using a utility
from the NIC
vendor that can
be run from
DOS.
A utility is
required to
write data to
this memory
and is available
from NIC
vendor. Writing
data to this
ROM in an
inappropriate
manner will
render the NIC
nonfunctional.
ENWW
Non-volatile memory usage
167