Check the sysconfig/prtconf-vp.out file for
duplicate devalias entries. If any duplicates are
found, determine if the duplicate entries reference
different devices. If any duplicates are found to
reference different devices, the system may fail to
boot. Devalias entries in prtconf-vp.out ar
displayed in a system Node with a name of "aliases"
(see the node example below).

Example devalias Node entry from prtconf-vp.out.
Note that the duplicate alias "disk" would fail this
check. The duplicate alias disk5 would not fail,
because both entries reference the same device.
Also, note the node name field at the bottom of the
Node entry.

    Node 0xf081ffb0
        xdisk:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@0,0'
        xnet:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,hme@0,1'
        diskc:  '/ssm@0,0/pci@1c,700000/pci@1/SUNW,isptwo@4/sd@0,0'
        netc:  '/ssm@0,0/pci@1c,700000/pci@1/SUNW,hme'
        cdrom:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@6,0:f'
        disk:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@0,0'
        disk:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@1,0'
        disk0:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@0,0'
        disk1:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@1,0'
        disk2:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@2,0'
        disk3:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@3,0'
        disk4:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@4,0'
        disk5:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@5,0'
        def-cn:  '/sgcn'
        diskifp:  '/ssm@0,0/pci@19,700000/SUNW,ifp@1/ssd@0,0'
        diskglm:  '/ssm@0,0/pci@18,700000/scsi@2/disk@0,0'
        scsi:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo'
        net:  '/ssm@0,0/pci@1c,700000/pci@1/SUNW,hme@0,1'
        disk5:  '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@5,0'
        name:  'aliases'      

Delete the duplicate devalias entries from the OBP.
Note, this must be done from the OBP OK> prompt, and
will require system downtime to complete. Use the
command "nvunalias " to remove each of the duplicate
entries. Ensure that the nvramrc is not set to
recreate one of the duplicate aliases
unintentionally. Note that a "reset" may be required
on the system before the duplicate aliases will not
appear in the output of a "devalias" command. Then,
recreate the appropriate aliases with the "nvalias"
command.