HP Tru64 UNIX Version 5.1B-2 and Higher Patch Kit Installation Instructions (March 2009)

# /usr/sbin/versw_enable_delete
3. Shut down the entire cluster or the single system.
4. Reboot the entire cluster or the single system.
5. Run dupatch on your single system or on a cluster using the rolling upgrade procedure to
delete the patch kit.
Note:
The next step requires that you reboot each cluster member to remove the patch kit. Because
the no-roll procedure automatically reboots the system after deleting the patches, you would
not be able to perform the next steps as required. Therefore, you cannot use the no-roll
procedure to remove this patch kit.
6. Reboot the single system or each member of the cluster.
Changes to System May Need to Be Reversed
If you made the following changes to your system after installing the patch kit, you will have to
undo those changes before you can uninstall the patch kit:
• If you changed your hardware configuration (for example, by adding a new disk), the system
configuration that existed prior to installing the 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 the patch kit.
To uninstall the patch kit, do the following:
1. Remove all new hardware and new cluster members that you added after installing the
patch 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 Prior to Reboot on Certain Version 5.1B Systems
If removing a PK4 or higher patch kit restores your Version 5.1B 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 would occur if the inclusive patch kit you are uninstalling is the only patch
kit installed on your Version 5.1B system
You must also run this script if you are removing a specific patch from previous Version 5.1B
patch kits if those kits are the only patch kit on your system. The affected patch in those kits will
be noted in a Special Instruction that is displayed when you run the dupatch installation and
deletion processes.
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.
42 Patch Installation and Removal Instructions