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Sun Microsystems 440 OpenBoot Emergency Procedures for Systems With USB Keyboards

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40 Netra 440 Server System Administration Guide • August 2004

OpenBoot Emergency Procedures for Systems With USB Keyboards

The following sections describe how to perform the functions of the Stop commands

on systems that use USB keyboards, such as the Netra 440 server. These same

functions are available through Sun Advanced Lights Out Manager (ALOM) system

controller software.

Stop-A Functionality

Stop-A (Abort) key sequence works the same as it does on systems with standard

keyboards, except that it does not work during the first few seconds after the server

is reset. In addition, you can issue the ALOM system controller break command.

For more information, see “Reaching the ok Prompt” on page 10.

Stop-N Functionality

Stop-N functionality is not available. However, the Stop-N functionality can be

closely emulated by completing the following steps, provided the system console is

configured to be accessible using either the serial management port or the network

management port.

▼ To Restore OpenBoot Configuration Defaults

1. Log in to the ALOM system controller.

2. Type the following command:

This command resets the default OpenBoot configuration variables.

sc> bootmode reset_nvram

sc>

SC Alert: SC set bootmode to reset_nvram, will expire

20030218184441.

bootmode

Bootmode: reset_nvram

Expires TUE FEB 18 18:44:41 2003

Contents

Main Page Contents Page Page Page Figures Page Tables Page Preface How This Book Is Organized Using UNIX Commands Shell Prompts Typographic Conventions Related Documentation AaBbCc123 Page Configuring the System Console Communicating With the System Page What the System Console Does Using the System Console Default System Console Connection Through the Serial Management and Network Management Ports Page Alternative System Console Configuration Accessing the System Console Through a Graphics Monitor Note About the sc> Prompt Note Access Through Multiple Controller Sessions Reaching the sc> Prompt OpenBoot ok Prompt Reaching the ok Prompt Graceful Shutdown ALOM System Controller break or console Command L1-A (Stop-A) Keys or Break Key Note Externally Initiated Reset (XIR) Caution Manual System Reset Caution Getting to the ok Prompt Caution To Get to the ok Prompt Switching Between the ALOM System Controller and the System Console Note Accessing the System Controller Using the Serial Management Port To Use the Serial Management Port Activating the Network Management Port Note To Activate the Network Management Port Accessing the System Console Through a Terminal Server To Access The System Console Through a Terminal Server Page Note Accessing the System Console Through a TIP Connection To Access the System Console Through the TIP Connection Note Modifying the /etc/remote File To Modify the /etc/remote File Note Accessing the System Console Through an Alphanumeric Terminal To Access the System Console Through an Alphanumeric Terminal Note Verifying Serial Port Settings on TTYB Note To Verify the Serial Port Settings on TTYB Accessing the System Console Through a Local Graphics Monitor To Access the System Console Through a Local Graphics Monitor Page System Console OpenBoot Configuration Variable Settings Page Managing RAS Features and System Firmware Note ALOM System Controller Note Logging In To the ALOM System Controller Note To Log In To the ALOM System Controller About the scadm Utility Note To View Environmental Information Note Controlling the Locator LED Note OpenBoot Emergency Procedures OpenBoot Emergency Procedures for Systems With Non-USB Keyboards OpenBoot Emergency Procedures for Systems With USB Keyboards Stop-A Functionality Stop-N Functionality To Restore OpenBoot Configuration Defaults Stop-F Functionality Automatic System Recovery Note Auto-Boot Options Note Error Handling Summary Note Reset Scenarios Automatic System Recovery User Commands Enabling and Disabling Automatic System Recovery To Enable Automatic System Recovery Note To Disable Automatic System Recovery Note Obtaining Automatic System Recovery Information Unconfiguring and Reconfiguring Devices To Unconfigure a Device Manually Page Note To Reconfigure a Device Manually Note Enabling the Hardware Watchdog Mechanism and Its Options To Enable the Hardware Watchdog Mechanism Multipathing Software Managing Disk Volumes Disk Volumes Volume Management Software VERITAS Dynamic Multipathing Sun StorEdge Traffic Manager Note RAID Technology Disk Concatenation RAID 0: Disk Striping RAID 1: Disk Mirroring RAID 5: Disk Striping With Parity Hot-Spares Hardware Disk Mirroring Caution Physical Disk Slot Numbers, Physical Device Names, and Logical Device Names To Create a Hardware Disk Mirror Page To Delete a Hardware Disk Mirror Page To Perform a Mirrored Disk Hot-Plug Operation Caution Note To Perform a Non-Mirrored Disk Hot-Swap Operation Page Page Page Note that c1t3d0 is now listed as configured. OpenBoot Configuration Variables Page Page Page Alarm Relay Output Application Programming Interface Page Page Page Page Page Index SYMBOLS A B C D E F G H L M N O P R S T U V X