How To Use Openboot Diagnostics (Obdiag) - Sun Microsystems Enterprise 250 Owner's Manual

How to Use OpenBoot Diagnostics
(OBDiag)
When you turn on the system power, OBDiag runs automatically if any of the
following conditions apply:
The OpenBoot PROM variable diag-switch? is set to true.
You hold down the keyboard's Stop and D keys as you power on the system.
You power on the system by turning the front panel keyswitch to the Diagnostics
position (
In the event of an automatic system reset, POST diagnostics run under either of the
following conditions:
The diag-switch? variable is set to true and the diag-trigger variable is set
to error-reset or soft-reset.
The front panel keyswitch is in the Diagnostics position (
diag-trigger variable is set to error-reset or soft-reset.
For information about the various keyswitch positions, see "About the Status and
Control Panel" on page 8.
OBDiag tests run automatically, without operator intervention, under the conditions
described above. However, you can also run OBDiag in an interactive mode and
select which tests you want to perform. The following procedure describes how to
run OBDiag interactively from the system ok prompt.
Before You Begin
You can choose to view OBDiag diagnostic and error messages locally on a system
console or terminal, or remotely from an RSC console (see "About Remote System
Control (RSC)" on page 241).
To view diagnostic and error messages locally, you need to set up a console before
starting OBDiag. See "About Setting Up a Console" on page 19.
To view diagnostic and error messages remotely, you need to configure the RSC
software before starting OBDiag, see the Remote System Control (RSC) User's Guide.
230 Sun Enterprise 250 Server Owner's Guide • June 1998
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