On my fourth i386 machine that I've installed a new bootloader to
support a serial console, suddenly I'm getting locked out.  The
boot proceeds fine until the following panic:
	root on wd0a   dumps on wd0b
	root file system type: ffs
	panic: cnopen: cn_tab -> cn_dev == NODEV

	syncing disks ... done

	dumping to dev 0.1
Is there anything at all that can be done to recover, or do I get
to reinstall?  (Real bummer.)

henry nelson