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

80 Chapter3
System Startup Functions
Updating the Operating System
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:
1. backing up system data
2. limiting system use
3. deactivating network services
4. 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:
5. updating with the customized system load tape
6. 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:
1. attempting a START RECOVERY
2. attempting a START NORECOVERY
3. ensuring the validity of your START procedure
4. ensuring your hardware, hardware code, and current software are functioning properly
5. 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.
6. updating with the customized system load tape
7. restoring the backup tapes
8. returning to normal operation
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.
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.