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Sidewinder G2 6.1.1 Administration Guide - Glossary of Technical ...

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3<br />

Restarting or shutting down the system<br />

Restarting or<br />

shutting down the<br />

system<br />

3-2 General System Tasks<br />

You can boot the <strong>Sidewinder</strong> <strong>G2</strong> to start up in one <strong>of</strong> two kernels:<br />

Operational or Administrative (see “<strong>Sidewinder</strong> <strong>G2</strong> kernels” on page<br />

1-4 for descriptions <strong>of</strong> each kernel). This section describes how to<br />

power up the <strong>Sidewinder</strong> <strong>G2</strong> to the Operational kernel when the<br />

<strong>Sidewinder</strong> <strong>G2</strong> is powered <strong>of</strong>f, and how to reboot or shut down the<br />

system when the <strong>Sidewinder</strong> <strong>G2</strong> is running.<br />

Important: The Administrative kernel is used only when an administrator needs to<br />

perform special tasks (such as installing s<strong>of</strong>tware or restoring <strong>Sidewinder</strong> <strong>G2</strong> s<strong>of</strong>tware<br />

from a backup tape), or under certain circumstances for troubleshooting purposes. For<br />

information on powering on the system in the Administrative kernel, see “Powering-up the<br />

system to the Administrative kernel” on page F-2.<br />

When you power up the <strong>Sidewinder</strong> <strong>G2</strong>, it will boot to the<br />

Operational kernel by default. You can perform the same tasks in the<br />

Operational kernel as you can in the Administrative kernel. However,<br />

you will almost always run the <strong>Sidewinder</strong> <strong>G2</strong> in the Operational<br />

kernel, unless you need to perform a full system backup or restore, or<br />

to install hardware or s<strong>of</strong>tware. All procedures that require the<br />

Administrative kernel are discussed in Appendix F “Basic<br />

Troubleshooting”.<br />

The procedures to power-up, reboot, or shut down the <strong>Sidewinder</strong> <strong>G2</strong><br />

in the Operational kernel are described in the following subsections.<br />

Important: When the <strong>Sidewinder</strong> <strong>G2</strong> is rebooted or shutdown, a record <strong>of</strong> who issued<br />

the action is logged in the /var/log/messages file. This applies to a reboot or shutdown<br />

issued from the Admin Console or using the shutdown command.<br />

Powering-on the system to the Operational kernel<br />

Note: For information on powering-on the system to the Administrative kernel, see<br />

“Powering-up the system to the Administrative kernel” on page F-2.<br />

Because the Operational kernel is the default kernel, you can boot<br />

your <strong>Sidewinder</strong> <strong>G2</strong> to the Operational kernel by pressing the power<br />

button. Once the system has booted, you can start the Admin Console<br />

and log in to your <strong>Sidewinder</strong> <strong>G2</strong>. Once you are logged in, you can<br />

perform the Operational kernel tasks described in this manual.<br />

Note: If the boot process fails, see “What to do if the boot process fails” on page F-16.

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