IBM 84885BU User Manual - Page 28

drive, Recovering, POST/BIOS, update, failure

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Hard disk drive LEDs If the amber hard disk drive status LED on the front of a hard disk drive is lit continuously, it indicates a problem; see "Diagnostic error LEDs" on page 109. 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 a BIOS recovery diskette. To create this diskette, download the BIOS recovery disk image from http://www.ibm.com/pc/support and follow the directions in the image's included readme file. Using the BIOS recovery diskette, complete the following steps to recover the BIOS code: 1. Read Appendix B, "Safety information," on page 143. 2. Turn off the server and all attached devices. 3. Disconnect the power cord; then, disconnect all external cables. 4. Remove the side cover (see "Removing the side cover" on page 28). 5. Remove the frame-support bracket (see "Removing and installing the support bracket" on page 32). 6. Locate the boot block recovery jumper (JCON1) 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. Default (pins 1 and 2) BIOS recovery (no jumper) 1 2 3 BIOS recovery (JCON1) 1 2 3 CMOS data (JCMOS1) Default (pins 1 and 2) Clear CMOS data (pins 2 and 3) 18 xSeries 226 Type 8488 and 8648: Hardware Maintenance Manual and Troubleshooting Guide

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Hard
disk
drive
LEDs
If
the
amber
hard
disk
drive
status
LED
on
the
front
of
a
hard
disk
drive
is
lit
continuously,
it
indicates
a
problem;
see
“Diagnostic
error
LEDs”
on
page
109.
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
a
BIOS
recovery
diskette.
To
create
this
diskette,
download
the
BIOS
recovery
disk
image
from
and
follow
the
directions
in
the
image’s
included
readme
file.
Using
the
BIOS
recovery
diskette,
complete
the
following
steps
to
recover
the
BIOS
code:
1.
Read
Appendix
B,
“Safety
information,”
on
page
143.
2.
Turn
off
the
server
and
all
attached
devices.
3.
Disconnect
the
power
cord;
then,
disconnect
all
external
cables.
4.
Remove
the
side
cover
(see
“Removing
the
side
cover”
on
page
28).
5.
Remove
the
frame-support
bracket
(see
“Removing
and
installing
the
support
bracket”
on
page
32).
6.
Locate
the
boot
block
recovery
jumper
(JCON1)
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.
BIOS
recovery
(JCON1)
CMOS
data
(JCMOS1)
1 2 3
1 2 3
Default
(pins 1 and 2)
Default
(pins 1 and 2)
BIOS recovery
(no jumper)
Clear CMOS data
(pins 2 and 3)
18
xSeries
226
Type
8488
and
8648:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide