Solaris boot problem after Patch cluster install

just wondering if anyone can assist. i have just installed solaris 10 x86 recommended patches on a 16 disks server. where first 2 disks are mirrored called rpool, and remaining 14 disks are raid z called spool. upon installing the patches successfully and rebooting server, i am coming up with the following error:
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NOTICE: Can not read the pool label from '/pci@0,0/pci8086,25f8@4/pci111d,801c@0/pci111d,801c@4/pci108e,286@0/disk@0,0:a /pci@0,0/pci8086,25f8@4/pci111d,801c@0/pci111d,801c@4/pci108e,286@0/disk@1,0:a'
NOTICE: spa_import_rootpool: error 5, Inc. All rights reserved.
Cannot mount root on /pci@0,0/pci8086,25f8@4/pci111d,801c@0/pci111d,801c@4/pci108e,286@0/disk@0,0:a /pci@0,0/pci8086,25f8@4/pci111d,801c@0/pci111d,801c@4/pci108e,286@0/disk@1,0:a fstype zfs

panic[cpu0]/thread=fffffffffbc28820: vfs_mountroot: cannot mount root

fffffffffbc4b190 genunix:vfs_mountroot+323 ()
fffffffffbc4b1d0 genunix:main+a9 ()
fffffffffbc4b1e0 unix:_start+95 ()

skipping system dump - no dump device configured
rebooting...
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It looks like the solaris 10 os cannot find zfs filesystem and keeps on rebooting in normal solaris os mode, but when I go to safe mode and type: zfs list, I can see zfs rpool (mirrored) file system and cannot see the zfs spool (raid z) file system, any ideas on how i can fix the boot problem and get zfs spool back in the safest way possible?...