IBM 326m Hardware Maintenance Manual - Page 35

Recovering, POST/BIOS, update, failure - boot from usb

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Recovering from a POST/BIOS update failure If power to the server is interrupted while POST/BIOS code is being updated (flash update), the server might not restart (reboot) correctly or might not display video (no video). If this happens, you will need an IBM 326m System BIOS Crisis Recovery Diskette. You can download a file to create this diskette from http://www.ibm.com/support/. You will need an external diskette drive to create the diskette. When you have created the diskette, use the following recovery procedure using an external USB diskette drive: 1. Read "Safety information" on page 107, "Handling static-sensitive devices" on page 30, and "Installation guidelines" on page 29. 2. Turn off the server and all attached devices. 3. Unplug the power cord; then, disconnect all external cables. 4. Remove the cover (see "Removing the cover and bezel" on page 32. Boot block recovery jumper (JBBF1) Clear CMOS jumper (JBAT1) 5. Locate the boot block recovery jumper (JBBF1) on the system board. 6. Remove the boot block recovery jumper from pins 1 and 2; then, place the boot block recovery jumper onto pins 2 and 3. 7. Insert the IBM System BIOS Crisis Recovery Diskette for your server into the external USB floppy diskette drive A. 8. Replace the cover (see "Removing the cover and bezel" on page 32). 9. Connect the server to a power source, keyboard, monitor, and mouse. 10. The system will boot into a special recovery mode. Note: There may be several minutes of apparent inactivity during this process. 11. After the recovery completes, turn off the server, monitor, and peripheral devices. 12. Disconnect all power cords and external cables; then, remove the cover. 13. Return the boot block recovery jumper to pins 1 and 2. Chapter 3. Diagnostics 25

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Recovering
from
a
POST/BIOS
update
failure
If
power
to
the
server
is
interrupted
while
POST/BIOS
code
is
being
updated
(flash
update),
the
server
might
not
restart
(reboot)
correctly
or
might
not
display
video
(no
video).
If
this
happens,
you
will
need
an
IBM
326m
System
BIOS
Crisis
Recovery
Diskette.
You
can
download
a
file
to
create
this
diskette
from
You
will
need
an
external
diskette
drive
to
create
the
diskette.
When
you
have
created
the
diskette,
use
the
following
recovery
procedure
using
an
external
USB
diskette
drive:
1.
Read
“Safety
information”
on
page
107,
“Handling
static-sensitive
devices”
on
page
30,
and
“Installation
guidelines”
on
page
29.
2.
Turn
off
the
server
and
all
attached
devices.
3.
Unplug
the
power
cord;
then,
disconnect
all
external
cables.
4.
Remove
the
cover
(see
“Removing
the
cover
and
bezel”
on
page
32.
Boot block
recovery jumper (JBBF1)
Clear CMOS jumper (JBAT1)
5.
Locate
the
boot
block
recovery
jumper
(JBBF1)
on
the
system
board.
6.
Remove
the
boot
block
recovery
jumper
from
pins
1
and
2;
then,
place
the
boot
block
recovery
jumper
onto
pins
2
and
3.
7.
Insert
the
IBM
System
BIOS
Crisis
Recovery
Diskette
for
your
server
into
the
external
USB
floppy
diskette
drive
A.
8.
Replace
the
cover
(see
“Removing
the
cover
and
bezel”
on
page
32).
9.
Connect
the
server
to
a
power
source,
keyboard,
monitor,
and
mouse.
10.
The
system
will
boot
into
a
special
recovery
mode.
Note:
There
may
be
several
minutes
of
apparent
inactivity
during
this
process.
11.
After
the
recovery
completes,
turn
off
the
server,
monitor,
and
peripheral
devices.
12.
Disconnect
all
power
cords
and
external
cables;
then,
remove
the
cover.
13.
Return
the
boot
block
recovery
jumper
to
pins
1
and
2.
Chapter
3.
Diagnostics
25