© Copyright Lenovo 2016
Chapter 6: Boot Options
705
Recovering from a Failed Image Upgrade using XModem Download
Use
the
following
procedure
to
recover
from
a
failed
image
upgrade.
1.
Connect
a
PC
to
the
serial
port
of
the
switch.
2.
Open
a
terminal
emulator
program
that
supports
Xmodem
download
(for
example,
HyperTerminal,
SecureCRT,
or
PuTTY)
and
select
the
following
serial
port
characteristics:
Speed:
9600
bps
Data
Bits:
8
Stop
Bits:
1
Parity:
None
Flow
Control:
None
3.
Boot
the
switch
and
access
the
Boot
Management
menu
by
pressing
<Shift + B>
while
the
Memory
Test
is
in
progress
and
the
dots
are
being
displayed.
4.
Enter
Boot
Recovery
Mode
by
selecting
R
.
The
Recovery
Mode
menu
will
appear.
5.
Select
X
for
Xmodem
download.
You
will
see
the
following
display:
6.
When
you
see
the
following
message,
change
the
Serial
Port
speed
to
115200
bps:
7.
Press
<Enter>
to
set
the
system
into
download
accept
mode.
When
the
readiness
meter
displays
(a
series
of
“C”
characters),
start
Xmodem
on
your
terminal
emulator.
You
will
see
a
display
similar
to
the
following:
8.
Select
the
image
to
download.
Xmodem
initiates
the
file
transfer.
When
download
is
complete,
you
are
asked
to
change
the
Serial
Port
speed
back
to
9600
bps:
9.
Press
<Enter>
to
start
installing
the
image.
If
the
file
is
a
software
image,
enter
the
image
number:
Running
xmodem
rescue.....
Change
the
baud
rate
to
115200
bps
and
hit
the
<ENTER>
key
before
initiating
the
download.
...
Waiting
for
the
<Enter>
key
to
be
hit
before
the
download
can
start...
CC
Change
the
baud
rate
back
to
9600
bps,
hit
the
<ENTER>
key
Install
image
as
image
1
or
2
(hit
return
to
just
boot
image):
Summary of Contents for RackSwitch G8332
Page 20: ...20 G8332 Command Reference for ENOS 8 4 ...
Page 32: ...32 G8332 Command Reference for ENOS 8 4 ...
Page 674: ...674 G8332 Command Reference for ENOS 8 4 ...
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Page 766: ...766 G8332 Command Reference for ENOS 8 4 Taiwan Class A compliance statement ...
