IBM 8872 Service Guide - Page 93

Diagnostics, Recovering, update, failure

Get IBM 8872 - eServer xSeries 460 PDF manuals and user guides
UPC - 000435813060
View all IBM 8872 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 93 highlights

Real Time Diagnostics Real Time Diagnostics can help you diagnose certain devices while the operating system is running, to prevent and minimize server downtime. For more information and to download Real Time Diagnostics, go to: http://www-1.ibm.com/support/docview.wss?uid=psg1MIGR-50681. Recovering from a BIOS update failure The server has an advanced recovery feature that will automatically switch to a backup BIOS page if the BIOS code in the server has become damaged, such as from a power failure during an update. The flash memory of the server consists of a primary page and a backup page. If the BIOS code in the primary page is damaged, the baseboard management controller will detect the error and automatically switch to the backup page to start the server. If this happens, a POST message Booted from backup POST/BIOS image is displayed. The backup page version might not be the same version as the primary page version. You can then recover or restore the original primary page BIOS by using a BIOS flash diskette. Note: To create and use a diskette, you must add an optional external diskette drive to the server. To recover the BIOS code and restore the server operation to the primary page, complete the following steps: 1. Download the latest version of the BIOS code from http://www.ibm.com/pc/support/. 2. Update the BIOS code, following the instructions that come with the update file that you downloaded. This will automatically restore and update the primary page. 3. Restart the server. If that procedure fails, the server might not restart correctly or might not display video. To manually restore the BIOS code, complete the following steps: 1. Read the safety information that begins on page vii and "Handling static-sensitive devices" on page 100. 2. Turn off the server and peripheral devices and disconnect all external cables and power cords; then, remove the cover. 3. Locate the boot block recovery jumper (J14 on the I/O board) (see "I/O board internal connectors and jumpers" on page 8). 4. Disconnect the server from the ac power source. 5. Move the J14 jumper to pins 2 and 3 to enable the backup page. 6. Wait 30 seconds; then, connect the server to the ac power source. 7. Insert the BIOS flash diskette into the external diskette drive. 8. Restart the server. 9. When POST starts, select 1 - Update POST/BIOS from the menu that contains various flash (update) options. 10. When you are asked whether you want to save the current code to a diskette, type N. Chapter 2. Diagnostics 77

  • 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
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
Real
Time
Diagnostics
Real
Time
Diagnostics
can
help
you
diagnose
certain
devices
while
the
operating
system
is
running,
to
prevent
and
minimize
server
downtime.
For
more
information
and
to
download
Real
Time
Diagnostics,
go
to:
http://www-1.ibm.com/support/docview.wss?uid=psg1MIGR-50681.
Recovering
from
a
BIOS
update
failure
The
server
has
an
advanced
recovery
feature
that
will
automatically
switch
to
a
backup
BIOS
page
if
the
BIOS
code
in
the
server
has
become
damaged,
such
as
from
a
power
failure
during
an
update.
The
flash
memory
of
the
server
consists
of
a
primary
page
and
a
backup
page.
If
the
BIOS
code
in
the
primary
page
is
damaged,
the
baseboard
management
controller
will
detect
the
error
and
automatically
switch
to
the
backup
page
to
start
the
server.
If
this
happens,
a
POST
message
Booted
from
backup
POST/BIOS
image
is
displayed.
The
backup
page
version
might
not
be
the
same
version
as
the
primary
page
version.
You
can
then
recover
or
restore
the
original
primary
page
BIOS
by
using
a
BIOS
flash
diskette.
Note:
To
create
and
use
a
diskette,
you
must
add
an
optional
external
diskette
drive
to
the
server.
To
recover
the
BIOS
code
and
restore
the
server
operation
to
the
primary
page,
complete
the
following
steps:
1.
Download
the
latest
version
of
the
BIOS
code
from
2.
Update
the
BIOS
code,
following
the
instructions
that
come
with
the
update
file
that
you
downloaded.
This
will
automatically
restore
and
update
the
primary
page.
3.
Restart
the
server.
If
that
procedure
fails,
the
server
might
not
restart
correctly
or
might
not
display
video.
To
manually
restore
the
BIOS
code,
complete
the
following
steps:
1.
Read
the
safety
information
that
begins
on
page
vii
and
“Handling
static-sensitive
devices”
on
page
100.
2.
Turn
off
the
server
and
peripheral
devices
and
disconnect
all
external
cables
and
power
cords;
then,
remove
the
cover.
3.
Locate
the
boot
block
recovery
jumper
(J14
on
the
I/O
board)
(see
“I/O
board
internal
connectors
and
jumpers”
on
page
8).
4.
Disconnect
the
server
from
the
ac
power
source.
5.
Move
the
J14
jumper
to
pins
2
and
3
to
enable
the
backup
page.
6.
Wait
30
seconds;
then,
connect
the
server
to
the
ac
power
source.
7.
Insert
the
BIOS
flash
diskette
into
the
external
diskette
drive.
8.
Restart
the
server.
9.
When
POST
starts,
select
1
-
Update
POST/BIOS
from
the
menu
that
contains
various
flash
(update)
options.
10.
When
you
are
asked
whether
you
want
to
save
the
current
code
to
a
diskette,
type
N.
Chapter
2.
Diagnostics
77