Chapter
6.
Using
the
Online
and
Standalone
Diagnostics
The
AIX
diagnostics
consist
of
online
diagnostics
and
standalone
diagnostics.
Attention:
The
AIX
operating
system
must
be
installed
in
order
to
run
online
diagnostics.
If
the
AIX
operating
system
is
not
installed,
use
the
standalone
diagnostic
procedures.
Online
diagnostics,
when
they
are
installed,
reside
with
AIX
in
the
file
system.
They
can
be
booted:
v
In
single
user
mode
(referred
to
as
service
mode
)
v
To
run
in
maintenance
mode
(referred
to
as
maintenance
mode
)
v
To
run
concurrently
with
other
applications
(referred
to
as
concurrent
mode
)
Standalone
diagnostics
must
be
booted
before
they
can
be
run.
If
booted,
the
diagnostics
have
no
access
to
the
AIX
error
log
nor
the
AIX
configuration
data
on
the
system
hard
drive.
Does
the
system
have
AIX
diagnostics
preinstalled?
YES
Go
to
“Running
the
Online
Diagnostics
in
Service
Mode”
on
page
186.
NO
Go
to
“Running
the
Standalone
Diagnostics
with
CD-ROM”
on
page
189.
If
standalone
diagnostics
will
be
run
from
a
NIM
server,
go
to
“Running
Standalone
Diagnostics
from
a
Network
Installation
Management
(NIM)
Server”
on
page
189.
Operating
Considerations
for
Online
and
Standalone
Diagnostics
Note:
When
possible,
run
online
diagnostics
in
service
mode.
Online
diagnostics
perform
additional
functions
compared
to
standalone
diagnostics.
Running
online
diagnostics
in
service
mode
ensures
that
the
error
state
of
the
system
that
has
been
captured
in
NVRAM
is
available
for
your
use
in
analyzing
the
problem.
The
AIX
error
log
and
certain
SMIT
functions
are
only
available
when
diagnostics
are
run
from
the
disk
drive.
When
diagnostics
are
installed,
the
device
support
for
some
devices
might
not
get
installed.
If
this
is
the
case,
that
device
does
not
display
in
the
diagnostic
test
list
when
running
disk-based
diagnostics.
Identifying
the
Terminal
Type
to
the
Diagnostics
When
you
run
diagnostics,
you
must
identify
which
type
of
terminal
you
are
using.
If
the
terminal
type
is
not
known
when
the
FUNCTION
SELECTION
menu
is
displayed,
the
diagnostics
do
not
allow
you
to
continue
until
a
terminal
is
selected
from
the
DEFINE
TERMINAL
option
menu.
Undefined
Terminal
Types
If
you
specify
an
undefined
terminal
type
from
the
DEFINE
TERMINAL
option
menu,
the
menu
prompts
the
user
to
enter
a
valid
terminal
type.
The
menu
redisplays
until
either
a
valid
type
is
entered
or
you
exit
the
DEFINE
TERMINAL
option.
If
the
AIX
operating
system
is
being
used,
from
the
command
line,
type:
export
term=vt320
Resetting
the
Terminal
Pressing
Ctrl-C
to
reset
the
terminal.
The
screen
display
that
results
from
this
reset
depends
on
the
mode
in
which
the
system
is
being
run:
v
Online
Normal
or
Maintenance
Mode
-
The
command
prompt
displays.
v
Standalone
Mode
or
Online
Service
Mode
-
The
terminal
type
is
reset
to
dumb
,
the
Diagnostic
Operating
Instruction
panel
displays,
and
you
are
required
to
go
through
the
DEFINE
TERMINAL
process
again.
185
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