The floppy drive has been very well tested and works perfectly.  The disk also works perfectly.

I was going to say the SCSI enclosure didn't work but it appears to be booting to OS 9 from an external CD drive.  I guess the HD I had been using died.

It sounds like I left an HD in there (not the one that apparently died).  OS 9 cannot recognize it.  I will have to work on it next weekend.