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This section provides general information on using the MPE/iX
and initial system loader (ISL) commands, options, and utilities
to update the operating system of a HP 3000 (Series 900).
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CAUTION: Specific update and installation instructions are
subject to change. This manual provides you with an overview of
the procedures involved.
For more specific information on using MPE/iX and initial
system loader (ISL) commands, options, and utilities to update your
operating system for a particular new release, refer to the appropriate
version of HP e3000 MPE/iX System Software Maintenance
Manual. This manual is included with the software tapes
for each new release and contains information specific for that release.
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The ISL Utility
The ISL utility UPDATE is more commonly used than INSTALL.
The UPDATE utility replaces the base system files on the
system disk with those from a boot tape. Optionally, you can update
the configuration data files in the group CONFIG.SYS.
Before any other files are restored, UPDATE verifies that the system
disk is a valid main system disk. If not, UPDATE halts with an error
message.
The UPDATE utility is primarily used to replace a current version of
the operating system with another version, but you can also use the
UPDATE utility to aid in recovering from a severe system failure.
If your system fails, you have many options to use to help recover your system.
Use UPDATE as a recovery method only after doing the following:
attempting a START RECOVERY
attempting a START NORECOVERY
ensuring the validity of your START procedure
ensuring that your hardware, hardware code, and current software
are functioning properly
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CAUTION: Do not attempt to use UPDATE to restore your
system without reading the Backdating Your System Appendix in HP e3000
MPE/iX System Software Maintenance Manual.
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Scheduling a System Update
If you are using the UPDATE facility as a recovery method, the opportunity
to schedule your system's UPDATE is probably not available to you. Take time to
thoroughly examine the UPDATE process before using it as a recovery method.
Understanding the UPDATE process can reduce system operator and system
manager errors and, therefore, reduce your system's downtime.
If you are using the UPDATE utility to replace a current version of
the operating system with a newer version, schedule the update for off-peak
hours. The update procedure can take up to four hours, depending on the
system and the number of subsystem products you have purchased.
To reduce the time involved in ensuring the integrity of your backups, schedule
the UPDATE immediately after a full system backup.
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 "Summary of System Startup
Function" 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.
Updating the Operating System: a Preview
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NOTE: Each customer installation or update is somewhat different.
Examine the processes described for areas you may need to customize
to fit your system. The following Hewlett-Packard publications will
prove useful for updating your system:
HP e3000 MPE/iX System Software Maintenance Manual
MPE/iX Commands Reference Manual
Configuring Systems for Terminals, Printers, and Other
Serial Devices
HP e3000/iX Network Planning and Configuration Guide
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Booting the system to MPE/iX using the UPDATE utility may involve
preliminary steps depending upon the particulars of your system and its usage.
Some of the preliminary steps are listed below:
backing up system data
limiting system use
deactivating network services
renaming any system files you wish to maintain
reserving adequate disk space
Once you are ready to begin the operating system update, the
following are required steps of the process:
updating from the system load tape
restoring the FOS tape
restoring the SUBSYS tape
creating a customized system load tape
updating with the customized system load tape
returning to normal operation
Updating the System Configuration: a Preview
If you are updating just the configuration of your system and not the operating
system, then you have already created the customized SLT, as in step 9 above.
You did this when you made your configuration changes in SYSGEN and did a
KEEP. This information was transferred to the CSLT
at the end of the update process. The following steps are a subset of
an operating system update:
backing up system data
limiting system use
deactivating network services
renaming any system files you wish to maintain
Once you are ready to begin the configuration update, the following
are required steps of the process:
updating with the customized system load tape
returning to normal operation
Updating to Recover from System Failure: a Preview
If your system fails, you have many options to use to help recover your system.
Use the UPDATE utility as a recovery method only after doing the
following:
attempting a START RECOVERY
attempting a START NORECOVERY
ensuring the validity of your START procedure
ensuring your hardware, hardware code, and current software are
functioning properly
reserving adequate disk space
Once you are ready to begin the recovery update, the following are
required steps of the process. These steps are a subset of an
operating system update.
updating with the customized system load tape
restoring the backup tapes
returning to normal operation
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CAUTION: Do not attempt to use UPDATE to restore your
system without reading the Backdating Your System Appendix in HP e3000
MPE/iX System Software Maintenance Manual.
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Backing up the System and Retaining the Current Configuration
Before updating your system, ensure that you have complete
backup tapes. If up-to-date backups do not exist, reschedule the
update. The backups provide a method of restoring your data if difficulties
arise during the update.
You should also retain a hard copy of your system's current configuration. If
you use the CONFIG option with UPDATE, UPDATE replaces the
configuration files in the group CONFIG.SYS on disk with any that may
exist in the CONFIG.SYS on the system load tape (SLT). If you use this
option, you can unintentionally replace your system's current configuration
files with the ones that UPDATE provides. In the event of an
unintended replacement, if you have a listing of your current configuration,
you can easily regenerate your system's current configuration.
Use SYSGEN to generate current configuration listings. For information on using
SYSGEN, refer to Chapter 4 "Using the System Generator
(SYSGEN)"
The above information has provided you with an overview of
the update process. If you are planning to update your system, please
follow the instructions in the HP e3000 MPE/iX System
Software Maintenance Manual which came with the system tapes.
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