HP Tru64 UNIX and TruCluster Server Version 5.1B-6 Patch Summary and Release Notes

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.
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.
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.
NOTE: Because the no-roll procedure automatically reboots the system after deleting the
patches, you cannot use this method to delete this patch kit if doing so returns your system to a
pre-patched state.
Failing to run this script will result in your system being unable to boot normally. If this occurs,
do the following:
1. Boot your system in single-user mode:
>>> boot -fl s
2. Run the script:
# /etc/dn_fix_dat.sh
3. Reboot normally.
If you also need to reverse the version switch as described in “Script Required to Reverse Version
Switch”, run the /etc/dn_fix_dat.sh script after step 5 in that process.
Because the no-roll procedure automatically boots your system, you cannot use that patch kit
removal method if doing so would restore your system to a pre-patched state
Important Kit Installation and Removal Release Notes 19