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

Chapter 3

System Startup Functions

Updating the Operating System

Using the UPDATE Utility and Options

The command to invoke the UPDATE utility is UPDATE. The utility has two initial options, CONFIG/NOCONFIG

and START/NOSTART, with additional options if START is selected:

UPDATE[{ ;CONFIG [{ ;START

;NOCONFIG}] ;NOSTART } [options]]

where options are: [;LOGON=acct] [GROUP=cgn]

[{ ;SINGLE-DISC [{ ;SINGLE-USER

;MULTI-DISC }] ;MULTI-USER }]

[{ ;SYSSTART

;NOSYSSTART }]

• The CONFIG/NOCONFIG option allows you to indicate whether you wish to replace the configuration files in

the group CONFIG.SYS on disk with any that may exist in the group CONFIG.SYS on the tape. (The

CONFIG.SYS group on a factory tape is empty; however, a customer-generated tape may contain

configuration data.)

• The START/NOSTART option allows you to choose whether or not to autoboot once the update is complete. If

you specify START as an option, or accept it as the default, the remaining START options become available.

Refer to Table 3-4 for more information on the START options available for an update. Enter the options in any

order, and separate them from the command and other options by a blank or semicolon.

Entering the command UPDATE without listing any options

ISL> UPDATE

is the same as specifying the following default options:

ISL> UPDATE NOCONFIG START GROUP=CONFIG LOGON=&

OPERATOR.SYS MULTI-DISC MULTI-USER SYSSTART

The UPDATE utility with its default options instructs the system to perform these tasks:

• update the existing operating system without replacing the configuration data files on disk

• autoboot the system from disk after the update is completed

• use the configuration group CONFIG.SYS

• attempt to log on in the user account OPERATOR.SYS (if there is no OPERATOR.SYS user, you will see the

MPE prompt)

• bring up all volumes present on the system.

• allow access to all mounted volumes by all users

• execute the commands in the system startup file, SYSSTART.PUB.SYS, if it is present

Restarting of jobs is not permitted after either an UPDATE or an INSTALL, because no jobs exist after an

UPDATE or an INSTALL.