Booting from an Ultra Enterprise 3500 internal drive fails with "invalid wwn"
and "can't open boot device".  The boot drive, as well as all drives on the 
boot drive's fibre loop cannot be seen with probe-fcal-all at this point.
A subsequent power cycle typically allows the system to boot.

Note: This boot failure may occur intermittently.  
(i.e.; it may take several successful reboots before a failure reoccurs).

This failure may be fixed with a firmware update patch for the internal drives.

Determine which type of internal drives are being used (use the format utility
or probe-fcal-all from the ok prompt) and then update the firmware for those 
drives by following the Patch Installation Instructions in the README 
file that comes with the firmware update patch.

     Drive:                       Patched with:
  9GB ST19171FC                   106129-09 or higher
  9GB ST39102FC                   108104-01 or higher
  18GB ST118273F                  108102-02 or higher

NOTE: The following patches are required with the above firmware update
patches.  Insure that the following patches are applied before updating
the drive firmware:

Solaris 2.5.1   105310-05 or higher (socal, sf driver, and luxadm patch)
        2.6     105356-01 or higher (/kernel/drv/ssd patch)
        2.6     105357-01 or higher (/kernel/drv/ses patch)
        2.      105375-04 or higher (sf & socal driver patch)