System Startup, Configuration, and Shutdown Reference Manual (32650-90907)

Chapter 3

System Startup Functions

Dumping System Memory and Secondary Storage

This section discusses using MPE/iX and initial system loader commands, options, and utilities to dump

system memory and secondary storage to tape.

What is the Function of the DUMP Utility?

The DUMP utility saves the current state of the system’s main memory and secondary storage to tape for later

analysis. Perform a memory dump after a system failure or hang, for a recurring system problem, or when the

system fails to boot properly. Have the tape analyzed by your Hewlett-Packard Representative or your

Hewlett-Packard Response Center.

Using the DUMP Utility and Options

The DUMP utility has one basic option, SUBSET=ALL/MEMORY. Because START/NOSTART are also options, DUMP

can use several START command options:

DUMP [SUBSET= { ALL [{ ;START

MEMORY }] ;NOSTART } [options]]

Where options are:

[{ ;RECOVERY [{ ;SINGLE-DISC

;NORECOVERY }] ;MULTI-DISC }]

[{ ;SINGLE-USER [{ ;SYSSTART

;MULTI-USER }] ;NOSYSSTART }]

To perform a complete memory dump, enter the DUMP command. The SUBSET=ALL option is the default option

and dumps both main and virtual memory. The SUBSET=MEMORY option is required to dump main memory

contents only.

Issuing the command DUMP without any options

ISL> DUMP

is the same as specifying the following default options:

ISL> DUMP GROUP=CONFIG LOGON=OPERATOR.SYS MULTI-DISC &:

MULTI-USER RECOVERY START SUBSET=ALL SYSSTART

The DUMP command and its default options instruct the system to perform the following tasks if an autoboot

file exists, the autoboot file is enabled, and the START option is specified:

1. Dump all memory and disk-based system data to tape.

2. Boot the system from disk after the dump is completed.

3. Boot with the configuration group CONFIG.SYS.

4. Log on in the user OPERATOR.SYS. (If there is no OPERATOR.SYS user, you will see the MPE prompt).

5. Allow access to all mounted volumes by all users.

6. Restart jobs that are intact.