Sun Microsystems Sun Fire V440 Diagnostics And Troubleshooting Manual page 172

How to Troubleshoot a System That
Does Not Boot
A system might be unable to boot due to hardware or software problems. If you
suspect that the system is unable to boot for software reasons, refer to
"Troubleshooting Miscellaneous Software Problems" in the Solaris System
Administration Guide: Advanced Administration. If you suspect the system is unable to
boot due to a hardware problem, use the following procedure to determine the
possible causes.
Before You Begin
Log in to the system controller and access the sc> prompt. For information, see:
"About the sc> Prompt" on page 169
This procedure assumes that the system console is in its default configuration, so
that you are able to switch between the system controller and the system console.
See:
"About Communicating With the System" on page 164
"Access Through the Network Management Port" on page 168
What to Do
1. Examine the ALOM event log. Type:
sc> showlogs
The ALOM event log shows system events such as reset events and LED indicator
state changes that have occurred since the last system boot. To identify problems,
examine the output for Service Required LEDs that are ON.
shows a sample event log, which indicates that the front panel Service Required LED
is ON.
154 Sun Fire V440 Server Diagnostics and Troubleshooting Guide • July 2003
CODE EXAMPLE 7-31