Sun Cluster Software Installation Guide for Solaris OS
ProcedureSPARC: How to Recover From a Partially Completed Dual-
Partition Upgrade  Perform this procedure if a dual-partition
upgrade fails and the state of the cluster meets all of the
following criteria:  You can also perform this procedure if the
upgrade has succeeded on the first partition but you want to
back out of the upgrade.  Note –  Do not perform this procedure
after dual-partition upgrade processes have begun on the second
partition. Instead, perform How to Recover from a Failed Dual-
Partition Upgrade.  Before You Begin  Before you begin, ensure
that all second-partition nodes are halted. First-partition
nodes can be either halted or running in noncluster mode.
Perform all steps as superuser.    1. Boot each node in the
second partition into noncluster mode.      # ok boot -x   2. On
each node in the second partition, run the scinstall -u recover
command.      # /usr/cluster/bin/scinstall -u recover      The
command restores the original CCR