IBM 8649 Hardware Maintenance Manual - Page 37

Recovering, POST/BIOS, update, failure

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Recovering from a POST/BIOS update failure If power to your server is interrupted while POST/BIOS code is being updated (flash update), your server might not restart (reboot) correctly. If this happens, use the following procedure to recover: 1. Review "Safety information" on page 129 2. Turn off the server and all attached devices. 3. Unplug the power cord; then, disconnect all external cables. 4. Remove the side cover and frame-support bracket. (See "Removing the side cover" on page 36 and "Removing and installing the support bracket" on page 38) 5. Locate the boot block recovery jumper (J12) on the system board, removing any adapters that impede access to the jumper. The following illustration shows the location of the jumper on the system board. (J12) Normal Configure 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 Keep data Clear data Recovery (no jumper) Boot block CMOS recovery jumper (JBAT1) recovery jumper (J12) 6. Remove the boot block recovery jumper from pins 1 and 2. 7. Replace any adapters that were removed; then, replace the frame-support bracket and replace the side cover. (See "Removing and installing the support bracket" on page 38 and "Replacing the side cover" on page 67.) 8. Connect the server to a power source, keyboard, monitor, and mouse. 9. Insert the POST/BIOS update (flash) diskette into the diskette drive. You can download a file to create this diskette from http://www.ibm.com/support on the World Wide Web. For more information, see Appendix A, "Getting help and technical assistance," on page 127 10. Turn on the server and the monitor. 11. After the update session completes, turn off the server and monitor. 12. Remove the diskette from the diskette drive. 13. Disconnect all power cords and external cables; then, remove the side cover. 14. Return the boot block recovery jumper to pins 1 and 2. Chapter 3. Diagnostics 27

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Recovering
from
a
POST/BIOS
update
failure
If
power
to
your
server
is
interrupted
while
POST/BIOS
code
is
being
updated
(flash
update),
your
server
might
not
restart
(reboot)
correctly.
If
this
happens,
use
the
following
procedure
to
recover:
1.
Review
“Safety
information”
on
page
129
2.
Turn
off
the
server
and
all
attached
devices.
3.
Unplug
the
power
cord;
then,
disconnect
all
external
cables.
4.
Remove
the
side
cover
and
frame-support
bracket.
(See
“Removing
the
side
cover”
on
page
36
and
“Removing
and
installing
the
support
bracket”
on
page
38)
5.
Locate
the
boot
block
recovery
jumper
(J12)
on
the
system
board,
removing
any
adapters
that
impede
access
to
the
jumper.
The
following
illustration
shows
the
location
of
the
jumper
on
the
system
board.
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
CMOS recovery
jumper (JBAT1)
Boot block
recovery jumper
(J12)
Keep data
Normal
Clear data
Configure
Recovery
(no jumper)
(J12)
6.
Remove
the
boot
block
recovery
jumper
from
pins
1
and
2.
7.
Replace
any
adapters
that
were
removed;
then,
replace
the
frame-support
bracket
and
replace
the
side
cover.
(See
“Removing
and
installing
the
support
bracket”
on
page
38
and
“Replacing
the
side
cover”
on
page
67.)
8.
Connect
the
server
to
a
power
source,
keyboard,
monitor,
and
mouse.
9.
Insert
the
POST/BIOS
update
(flash)
diskette
into
the
diskette
drive.
You
can
download
a
file
to
create
this
diskette
from
on
the
World
Wide
Web.
For
more
information,
see
Appendix
A,
“Getting
help
and
technical
assistance,”
on
page
127
10.
Turn
on
the
server
and
the
monitor.
11.
After
the
update
session
completes,
turn
off
the
server
and
monitor.
12.
Remove
the
diskette
from
the
diskette
drive.
13.
Disconnect
all
power
cords
and
external
cables;
then,
remove
the
side
cover.
14.
Return
the
boot
block
recovery
jumper
to
pins
1
and
2.
Chapter
3.
Diagnostics
27