HP Tru64 UNIX and TruCluster Server Version 5.1B-5 Patch Summary and Release Notes (March 2009)

• The patch kit you want to remove was installed before the NHD (New Hardware
Delivery) kit.
For example, if you installed Patch Kit 2 and then installed NHD-7, you cannot
remove that patch kit. However, if you later installed Patch Kit 4, you can remove
that patch kit.
• The patch kit was installed with NHD-7.
Beginning with the release of Patch Kit 3, patch kits were incorporated into the
NHD-7 kits. As a result, when you installed NHD-7, you automatically installed
the current patch kit. These patch kits cannot be removed. However, you can
remove any subsequent patch kits. For example, if you installed NHD-7 with Patch
Kit 4 and later installed Patch Kit 5, you cannot remove Patch Kit 4, but can remove
Patch Kit 5.
If you must remove the patch kit, the only solution is to rebuild your system
environment by reinstalling the Version 5.1B operating system and then restoring your
system to its state before you installed NHD-7 with the unwanted patch kit.
2.2.2.2 Changes to System May Need to Be Reversed
If you made the following changes to your system after installing this patch kit, you
will have to undo those changes before you can uninstall it:
• If you changed your hardware configuration (for example, by adding a new disk),
the system configuration that existed prior to installing this patch kit might not
recognize the new devices or may not provide the necessary support for them.
• If you added new cluster members, the new members will not have an older state
to revert to if you attempt to uninstall this patch kit.
To uninstall this kit, do the following:
1. Remove all new hardware and new cluster members that you added after installing
this kit.
2. Run dupatch to uninstall the patch kit.
3. Verify that the patch kit was successfully uninstalled.
You can now add the cluster members you removed and reinstall the hardware you
removed, as long as the support for it existed in the pre-patched system. You can also
reinstall the patch kit.
2.2.2.3 Script Must Be Run When Returning to Pre-Patched System
If removing this patch kit restores your system to a pre-patched state, you must run
the script /etc/dn_fix_dat.sh before rebooting your system during the
patch-deletion process.
This situation would occur if Version 5.1B-2 or higher is the only Tru64 UNIX patch
kit installed on your 5.1B system.
2.2 Important Kit Installation and Removal Release Notes 29