Nonvolatile Memory Usage - HP Chromebook 11MK G9 Education Edition Maintenance And Service Manual

i.
ii.
iii.
iv.
NOTE:
into an AC outlet before starting.

Nonvolatile memory usage

Use this table to troubleshooting nonvolatile memory usage.
Table 8-1 Troubleshooting steps for nonvolatile memory usage
Nonvolatile
memory type Amount (Size)
HP Sure Start flash 8 MB
(select models
only)
Real Time Clock 256 bytes
(RTC) battery
backed-up CMOS
configuration
memory
Controller (NIC) 64 KB (not
EEPROM customer
accessible)
ENWW
Turn on or restart the computer, and then quickly press esc.
Select the Security menu and scroll down to the Utilities menu.
Select Hard Drive Utilities.
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.
The amount of time it takes for Disk Sanitizer to run can take several hours. Plug the computer
Does this Does this
memory memory
store retain data
customer when power
data? is removed?
No Yes
No Yes
No Yes
What is the
purpose of this How is data entered into this
memory? memory?
Provides Data cannot be written to this
protected device via the host processor.
backup of The content is managed solely
critical System by the HP Sure Start
BIOS code, EC Embedded Controller.
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 59.
Stores system RTC battery backed-up CMOS
date and time is programmed using
and noncritical Computer Setup (BIOS), or by
data. changing the Windows date &
time.
Stores NIC NIC EEPROM is programmed
configuration using a utility from the NIC
and NIC vendor that can be run from
firmware. DOS.
How is this memory write-
protected?
This memory is protected
by the HP Sure Start
Embedded Controller.
This memory is not write-
protected.
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 55