System Startup, Configuration, and Shutdown Reference Manual (32650-90892)

86 Chapter3

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