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System Startup, Configuration, and Shutdown Reference Manual: HP 3000 MPE/iX Computer Systems > Chapter 3 System Startup FunctionsInstalling the Operating System |
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This section provides a general overview on using operating system and initial system loader (ISL) commands, options, and utilities to install the operating system of a 900 Series HP 3000 system.
The INSTALL utility replaces all files on the system disk with files from the boot tape. These files include the disk logical interface format (LIF) label and directory, the system volume label, the bad sector table, the disk free space map, the system directory (null directory), boot files, and all base system files. The INSTALL utility builds a null system directory that contains the account SYS. The groups CONFIG, DIAG, MPEXL, and the default configuration groups are added by the INSTALL utility later. Installing a new version of the operating system can be accomplished by the system manager, except where specially customized software is to be installed. In this case, installation requires a Hewlett-Packard Service Representative. After completion, the default option (INSTALL START) boots the system from disk. The INSTALL utility is primarily used to do a first-time installation of the MPE/iX operating system. If you are installing a new release, be sure to follow the exact directions provided in the HP 3000 MPE/iX Installation, Update, and Add-On Manual (36123-90001). The INSTALL utility can also be used to replace current versions of the operating system, boot files, and base system files. Finally, the INSTALL utility can be used as a last resort in system recovery to reload the software. This section begins with a description of using the INSTALL utility to recover a lost system. The remaining sections provide information on doing a first-time installation or a reinstallation when the system was previously in use. If your system fails, you have many options to use to help recover your system. Use the INSTALL utility as a recovery method only after doing the following:
In the event of a major system failure caused by corrupted files or other possible causes, you can use the INSTALL utility to reload your system. In this procedure, the system is recovered through the use of backup tapes. You use a system load tape created as part of your system backup procedure. Alternately, you may instead use the SLT that the AUTOINST program created when the system was last installed or updated.
The following is an overview of the steps to perform.:
The reinstallation process is now complete. If you are using the INSTALL utility as a recovery method, the opportunity to schedule your system's installation is probably not available to you. Take time to thoroughly examine the INSTALL process before using it as a recovery method. Understanding the INSTALL process can reduce system operator and system manager error and, therefore, reduce your system's downtime. Normal operating system replacement should be scheduled for off-peak hours. The INSTALL procedure can take up to five hours, depending on your system and the number of subsystems you have purchased. Schedule the installation immediately after a full backup, if you are not doing a first-time installation. The command to invoke the INSTALL utility is INSTALL. The utility has one initial option, START/NOSTART, with additional options if START is selected.
To use INSTALL, enter the INSTALL command with or without START/NOSTART and its options. Separate options from the INSTALL command and other options with a space or semicolon. Entering the command INSTALL at the ISL prompt without listing any options:
is the same as specifying the following default options:
The INSTALL process with its default options instructs the system to perform the following tasks if an autoboot file exists, the autoboot file is enabled, and the START option is specified:
Booting the system to MPE/iX by using the INSTALL utility may involve preliminary steps if your system has previously been in use. When installing a system for the first time, you do not need to be concerned with these preliminary steps discussed below. Some of the preliminary steps include the following:
Once you are ready to begin the installation proper, the following are required steps of the process:
If you are installing over an existing system, ensure that it has been thoroughly backed up. If up-to-date backups do not exist, reschedule the installation. The backups provide a method of restoring your data. Please refer to the HP 3000 MPE/iX Installation, Update, and Add-On Manual (36123-90001) if you need additional information on backing up your system. You should also retain a hard copy of your system's current configuration. If you have a listing of your current configuration, you can easily regenerate your system's current configuration, if necessary. A customer-generated tape may contain configuration data in the CONFIG.SYS group. Use SYSGEN to modify the sample configuration file you used when you started the system from the disk. For information on using SYSGEN, refer to Chapter 4 “Using the System Generator (SYSGEN)” through Chapter 8 “Modifying System File Configurations”.
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