HP ProBook 430 HP ProBook 430 G1 Notebook PC Maintenance and Service Guide - Page 125

Non-volatile memory usage, Memory Type

Get HP ProBook 430 PDF manuals and user guides View all HP ProBook 430 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 125 highlights

Non-volatile memory usage Non Volatile Amount Memory Type (Size) Does this memory store customer data? Real Time Clock 256 Bytes No (RTC) battery backed-up CMOS configuration memory (CMOS) Controller (NIC) EEPROM 64 Kbytes No (not customer accessible) Keyboard ROM 64 Kbytes No (not customer accessible) DIMM Serial Presence Detect (SPD) configuration data System BIOS 256 Bytes No per memory module, 128 Bytes programmabl e (not customer accessible) 4 to 5 Yes MBytes 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? Yes Stores system Using the F10 Setup utility This memory is not write- date and time or changing the Microsoft® protected. HP and limited Windows® date & time. recommends password keyboard protecting the F10 Setup controller data. utility. Yes Store NIC Using a utility from the NIC A utility is required to configuration vendor that can be run from write data to this and NIC DOS. memory and is available firmware. from NIC vendor. Writing data to this ROM in an inappropriate manner will render the NIC non- functional. Yes Stores Programmed at the factory. A utility is required for firmware code Code is updated when the writing data to this (keyboard, system BIOS is updated. memory and is available mouse, & on the HP website. battery Writing data to this management). ROM in an inappropriate manner can render the PC non- functional. Yes Stores memory Programmed by the memory Data cannot be written module vendor. to this memory when the information. module is installed in a PC. The specific write protection method varies by memory vendor. Yes Store system System BIOS code is A utility is required for BIOS code and programmed at the factory. writing data to this PC Code is updated when the memory and is available configuration system BIOS is updated. on the HP website. data. Configuration data and Writing data to this settings are input using the ROM in an F10 setup utility or a custom inappropriate manner utility. can render the PC non- functional. Non-volatile memory usage 115

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
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?
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 & 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 non-
functional.
Keyboard ROM
64 Kbytes
(not customer
accessible)
No
Yes
Stores
firmware code
(keyboard,
mouse, &
battery
management).
Programmed at the factory.
Code is updated when the
system BIOS is updated.
A utility is required for
writing data to this
memory and is available
on the HP website.
Writing data to this
ROM in an
inappropriate manner
can render the PC non-
functional.
DIMM Serial
Presence Detect
(SPD)
configuration
data
256 Bytes
per memory
module, 128
Bytes
programmabl
e (not
customer
accessible)
No
Yes
Stores memory
module
information.
Programmed by the memory
vendor.
Data cannot be written
to this memory when the
module is installed in a
PC. The specific write
protection method varies
by memory vendor.
System BIOS
4 to 5
MBytes
Yes
Yes
Store system
BIOS code and
PC
configuration
data.
System BIOS code is
programmed at the factory.
Code is updated when the
system BIOS is updated.
Configuration data and
settings are input using the
F10 setup utility or a custom
utility.
A utility is required for
writing data to this
memory and is available
on the HP website.
Writing data to this
ROM in an
inappropriate manner
can render the PC non-
functional.
Non-volatile memory usage
115