After the system shuts down, you can add and validate a boot
option for the newly upgraded system disk, using the OpenVMS I64
Boot Manager utility. Then boot the newly upgraded system disk.
AUTOGEN runs automatically, after which the system shuts down again
and automatically reboots. If you are doing a concurrent or rolling
upgrade in an OpenVMS Cluster environment, do not boot any other
cluster members now.
Now go to
After Installing or Upgrading the OpenVMS Operating System and
check for any postupgrade tasks that need to be performed before
the system and cluster can be used. Once you have completed all
required postupgrade tasks, you can reboot and then use other cluster
members.
HP OpenVMS Version 8.2-1 for Integrity Servers... 
Upgrading the OpenVMS Operating System
