Overview

OpenVMS has the capability to:

• Boot with minimal operator intervention.

• Boot in any of several unusual circumstances.

• Reconfigure itself for optimal site-specific operation.

• Dump memory before shutdown.

• Examine key operating system data structures while operating.

Normally, the hardware will start booting when power is applied, but this action can be configured to start with the console prompt instead. Furthermore, once at the console prompt, standard hardware tests can be performed one at a time, or various extended diagnostics can be performed on the hardware components. There are various types of boot options, which will be explained in detail:

• Default

• Conversational (to interactively adjust system parameters and enter SYSTEM password)

• Standalone (for certain disk backup and restore situations)

Boot Process

When the machine either VAX or Alpha is turned on, it performs a hardware test on memory and the installed. controllers. Next, the hardware initialization program searches for attached peripherals. Finally, it displays the >>> prompt, called the "dead sergeant" to signal that the console program is ready.

There are several options available at the >>> prompt depending on the hardware model. Typically, more extensive hardware tests can be performed, disks can be initialized, and controllers can be configured. Most systems support a HELP command in some form to guide the manager; however, the operator's manual is essential for any extensive dialogs at this point. because each hardware model has unique capabilities and command syntax.

If the console program is configured to halt when powered up, the manager must enter a command...