Thanks!!! I applied BUG 14322 work around as follows (IT WORKED)...
{1} ok boot -F /platform/sun4u/boot_archive : snip # rm /platform # cd /boot # mv platform ../ # init 0 {0} ok boot SC Alert: Host System has Reset Probing system devices Probing memory Probing I/O buses Sun Fire V210, No Keyboard Copyright 2007 Sun Microsystems, Inc. All rights reserved. OpenBoot 4.22.33, 5120 MB memory installed, Serial #54938117. Ethernet address 0:3:ba:46:4a:5, Host ID: 83464a05. Rebooting with command: boot Boot device: /pci at 1c,600000/scsi at 2/disk at 0,0:a File and args: SunOS Release 5.11 Version snv_131 64-bit Copyright 1983-2009 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Hardware watchdog enabled Hostname: blowfish Reading ZFS config: done. Mounting ZFS filesystems: (6/6) blowfish console login: -- This message posted from opensolaris.org