HP Z Series User Manual

iv. Under Utilities, select Disk Sanitizer, select the hard drive with the data that you want to
clear, and then follow the on-screen instructions to continue.
NOTE: The amount of time it takes for Disk Sanitizer to run can take several hours. Plug the
computer into an AC outlet before starting.
Nonvolatile memory usage
Use this table to troubleshooting nonvolatile memory usage.
Table 11-1 Troubleshooting steps for nonvolatile memory usage
Nonvolatile
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 entered into
this memory?
How is this memory
write-protected?
HP Sure Start
flash (select
models only)
32 MB No Yes Provides
protected
backup of
critical
System BIOS
code, EC
firmware,
and critical
computer
configuration
data for
select
platforms
that support
HP Sure
Start.
For more
information,
see
Using HP
Sure Start
(select
products
only) on page
100.
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
256 bytes No Yes Stores
system date
and time and
noncritical
data.
RTC battery backed-up
CMOS is programmed
using Computer Setup
(BIOS), or by changing
the Windows date and
time.
This memory is not
write protected.
Controller (NIC)
EEPROM
64 KB (not
customer
accessible)
No Yes Stores NIC
configuration
and NIC
firmware.
NIC EEPROM is
programmed using a
utility from the NIC
vendor that can be run
from DOS.
A utility must be
used to write data
to this memory and
is available from the
NIC vendor. Writing
data to this ROM in an
inappropriate manner
will render the NIC
non-functional.
Nonvolatile memory usage 97

HP Z Series Specifications

General

Brand	HP
Model	Z Series
Category	Desktop
Language	English