Cannot boot to cdrom from ok prompt in Solaris 10

Hello,

I am trying to boot to the cdrom from the ok prompt (by typing "boot cdrom") on Sun V5120/V5220 Ultra SPARC T2 servers and receive the following error message:

Boot device: /pci@0/pci@0/pci@1/pci@0/pci@1/pci@0/usb@0,2/storage@2/disk@0:f File and args:
Can't read disk label.
Can't open disk label package
ERROR: boot-read fail

I have this exact same problem on 3 different V5120s. Any ideas are greatly appreciated.

Thanks,
Michael
mjh113437Asked:
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rindiCommented:
Your CD looks broken. replace it.
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Hanno P.S.IT Consultant and Infrastructure ArchitectCommented:
Either your disk is broken or the alias "cdrom" has been modified

The string you posted looks a little weird to me. Usually it reads something like
/pci@8,700000/scsi@1/sd@6,0:a

At the "ok " prompt, please enter
  ok show-disks
and boot off one of these
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Hanno P.S.IT Consultant and Infrastructure ArchitectCommented:
If you issue an
   ok devalias
you should see the entry for your cdrom device looking something like this:
   cdrom   /pci@1f,0/pci@1,1/ide@3/cdrom@2,0:f

If you have nothing special set (e.g. boot-device, nvram-rc etc.) in your NVRAM
you may want to reset entries to factory-default first:
  ok set-defaults


You can always try booting from the full path, using
  ok boot /pci@1f,0/pci@1,1/ide@3/cdrom@2,0:f
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con2007Commented:
along with the great comments given above, you can also run probe-scsi-all and see if it detects a CD drive.  If it does, use that path to boot from and use nvalias to create a new alias for the cdrom
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