Installation Manual

11. Go to the server console (or access the iLO Remote Console), and press Enter to boot the
debug selection on the OS load menu.
This step might take several minutes.
12. When you are finished debugging the host server, use PuTTY to connect to the CLI and
turn off the debug socket to the Virtual Serial Port. Then, enter the following command:
windbg_disable
You can disconnect and reconnect the Windows debugger as long as you keep the iLO
debug socket enabled.
More information
iLO security features
Administering SSH keys
Using the ProLiant Preboot Health Summary
If a ProLiant Gen9 server will not start up, you can use iLO to display diagnostic information on
an external monitor. When the server is off and power is available, iLO runs on auxiliary power
and can control the server video adapter to show the Preboot Health Summary.
Prerequisites
• The server supports a UID button or an SUV connector.
To verify server support for these features, see the server user guide.
• The server is off, and power is available.
• The remote console is not in use and a firmware update is not in progress. The Preboot
Health Summary cannot be accessed when the UID is in the BLINK state.
320 Troubleshooting