HP Tru64 UNIX Release Notes for Version 5.1B-4 (13157)

Changes to System Might Need to Be Reversed
If you made the following changes to your system after installing this patch kit, you 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 might 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 prepatched system. You can also reinstall the patch
kit.
Script Must Be Run When Returning to Prepatched System
If removing this patch kit restores your system to a prepatched state, you must run the
/etc/dn_fix_dat.sh script before rebooting your system during the patch-deletion process.
This situation occurs if Version 5.1B-4 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
prepatched state.
Failing to run this script results 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 dn_fix_dat.sh 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 prepatched state
Note:
If during the dupatch installation and deletion processes you see a Special Instruction about
running the /etc/dn_fix_dat.sh script, you should ignore that instruction unless your system
meets the requirement described here.
Cluster-Specific Installation and Removal Release Notes
This section provides information you need to be aware of if you are installing or removing patch
kits from a TruCluster Server environment.
24 Release Notes