Sun Microsystems T6300 For More Information About OpenBoot Firmware, Obtaining the ok Prompt

Models: T6300

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Using these commands results in the loss of all system coherence and state information. A manual system reset could corrupt the server’s file systems, although the fsck command usually restores them. Use this method only when nothing else works.

Caution – Accessing the ok prompt suspends the Solaris OS.

When you access the ok prompt from a functioning server, you are suspending the Solaris OS and placing the system under firmware control. Any processes that were running under the operating system are also suspended, and the state of such processes might not be recoverable.

After a manual system reset the system can be configured to boot automatically if the OpenBoot auto-boot?configuration variable is set to true. See “System Console OpenBoot Configuration Variable Settings” on page 17. If the server begins to boot automatically after a reset, you must abort the boot with the ALOM system controller break command or perform a graceful shutdown of the Solaris Operating System after the boot has completed.

The commands you run from the ok prompt have the potential to affect the state of the system. This means that it is not always possible to resume execution of the operating system from the point at which it was suspended. Although the go command will resume execution in most circumstances, in general, each time you obtain the ok prompt, you should expect to have to reboot the system to get back to the operating system.

For More Information About OpenBoot Firmware

For more information about the OpenBoot firmware, refer to the OpenBoot 4.x Command Reference Manual. You can obtain an online version of the manual at

http://www.sun.com/documentation/

Obtaining the ok Prompt

This procedure provides several ways of reaching the ok prompt. For details about when to use each method, see “OpenBoot ok Prompt” on page 12.

Chapter 1 Configuring the System Console 15

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Sun Microsystems T6300 manual For More Information About OpenBoot Firmware, Obtaining the ok Prompt