When I run:

    caves[root-244]: disklabel -B wd0

I get:

    Usage: disklabel [-rt] disk
            (to read label)
    or disklabel -w [-r] disk type [ packid ]
            (to write label)
    or disklabel -e [-r] disk
            (to edit label)
    or disklabel -i [-r] disk
            (to create a label interactively)
    or disklabel -R [-r] disk protofile
            (to restore label)
    or disklabel [-NW] disk
            (to write disable/enable label)

The disklabel man page says "-B disk" should work.
What did I do wrong.  I've been able to install a
new 1.3ALPHA on the disk so the disk is recognized 
by the system.

TIA,
Paul