Installation guide

2Installation Notes
This chapter discuss the following topics:
• Update installation
• Installation problems using console device EWE0
• Join database migration
Do not attempt to install Tru64 UNIX Version 4.0F without first reading the
notes appropriate to your processor in Chapter 3. Failure to read these notes
can result in installation problems. Also, before you start your installation,
be sure to review the hardware documentation that came with your system.
2.1 Update Installation
To update your operating system software to Version 4.0F, you must use the
installupdate utility or the full installation procedure as described in
the Installation Guide.
Version 4.0F supports update installations from Version 4.0D and Version
4.0E. See Appendix B for more information about disk space requirements
before executing the installupdate utility.
Note that the -i flag for the installupdate command will be retired in
a future version of Tru64 UNIX. See Section 8.28 for more information.
2.1.1 Recovering from Boot Problems After Update Installation
During an installation update from Version 4.0D or Version 4.0E to Version
4.0F, a number of system configuration files on the system are updated with
new information. The changes to these configuration files are incorporated
into the existing files on the installed system as part of the update processing.
The changes are merged into the existing files after the system is rebooted
and running the new Version 4.0F generic vmunix kernel.
Depending on the hardware configuration and the content of the existing
system configuration files, the new Version 4.0F generic vmunix kernel may
fail to boot and run the final merge. This can occur when there are entries in
the existing files on the installed system that are incompatible with the new
kernel.