A litte more help with creating a freebsd partition on an external usbdrive

[steve]

This is a follow-up to my earlier question on how to create a freebsd 
partition on a usbdrive.  I followed these instructions: 

http://www.freebsd.org/doc/en_US.ISO8859-1/articles/formatting-media/x163.ht 
ml 

And was able to create a 111 gig freebsd partition on the usb hard drive, 
with label da0s1d and /mnt/usbdrive as it's mount point.  However, when I 
try to: 

># mount /dev/da0s1d /mnt/usbdrive

I get the error: 

># mount: /dev/da0s1d: no such file or directory

In /dev I see an entry for da0s1 and da0s1c but no entry for da0s1d. 

Any help in determining what I have missed? 

Steve