Solaris 10 Boot Hangs on T1

Solaris 10 is hanging during boot from the OpenBoot firmware on my T1.
Below is the output from doing an interactive boot from OpenBoot using
the "boot -a" command. I use the default values for all options and the
boot hangs after the root device is specified.

I'm rather new to Solaris so this problem has me stuck. Any ideas?
Thanks!
-JohnC

Sun Fire(TM) T1000, No Keyboard
Copyright 2005 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.20.0, 8184 MB memory available, Serial #<removed from post>.
Ethernet address <removed from post>, Host ID: <removed from post>.



Rebooting with command: boot -a
Boot device: /pci@7c0/pci@0/pci@8/scsi@2/disk@0,0 File and args: -a
Loading ufs-file-system package 1.4 04 Aug 1995 13:02:54.
FCode UFS Reader 1.12 00/07/17 15:48:16.
Loading: /platform/SUNW,Sun-Fire-T1000/ufsboot
Enter filename [kernel/sparcv9/unix]:
Enter default directory for modules
[/platform/SUNW,Sun-Fire-T1000/kernel /platform/sun4v/kernel /kernel
/usr/kernel]:
Name of system file [etc/system]:
SunOS Release 5.10 Version Generic_118833-24 64-bit
Copyright 1983-2006 Sun Microsystems, Inc. All rights reserved.
Use is subject to license terms.
root filesystem type [ufs]:
Enter physical name of root device
[/pci@7c0/pci@0/pci@8/scsi@2/disk@0,0:a]:

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