IBM B50 manual Running the Online Diagnostics in Concurrent Mode, Maintenance Mode

The diag command loads the diagnostic controller and displays the Online Diagnostic menus.

Running the Online Diagnostics in Concurrent Mode

To run Online Diagnostics in concurrent mode, use the following steps:

1. Log on to the AIX operating system as root or superuser (su).

2.Enter thediag command.

3.When the DIAGNOSTIC OPERATING INSTRUCTIONS display, follow the

instructions to check out the desired resources.

4.When testing is complete; use the 3 key to return to the DIAGNOSTIC OPERATING INSTRUCTIONS. Then press the 3 key again to return to the AIX

operating system prompt. Be sure to vary on any resource you had varied to off.

5. Press the Ctrl-D key sequence to log off from root or superuser (su).

Maintenance Mode

Maintenance

mode

runs

the

Online

Diagnostics

using

the

customer's

version of

the

AIX

operating

system.

This

mode

requires

that

all

activity

on

the

AIX operating

system be

stopped

so

the Online Diagnostics have most of the

resources

available

to

check.

All

of the

system resources except the SCSI adapters,

memory,

processor,

and

the

disk

drive

used for paging can be checked.

Error log analysis is done in maintenance mode when you select the Problem

Determination

option

on

the

DIAGNOSTIC MODE SELECTION

menu.

The shutdown -m

command

is

used

to

stop all

activity

on

the

AIX

operating

system

and

put

the

AIX operating system into maintenancediagmodecommand.Then the

is

used

to

invoke the diagnostic controller so you can run the diagnostics. After the

diagnostic

controller

is loaded, follow the normal diagnostic instructions.

Running

the

Online

Diagnostics

in

Maintenance

Mode

To run the Online Diagnostics in maintenance mode, you must be logged on to the customer's version of the AIX operatingroot systorsuperuserm as (su)and use the

shutdown -manddiag commands. Use the following steps to run the Online Diagnostics in maintenance mode:

1.Stop all programs except the AIX operating system (get help from the system operator if needed).

2.Log onto the AIX operating rootsystemor superuseras .(su)

5-127046 Model B50 User's Guide