My softraid keydisk did not get initialized during the install process. This fixes it.
Index: install.sub =================================================================== RCS file: /cvs/src/distrib/miniroot/install.sub,v retrieving revision 1.1214 diff -r1.1214 install.sub 2875c2875 < make_dev $(bioctl $ROOTDISK 2>/dev/null | sed -n 's/.*<\(.*\)>$/\1/p') --- > make_dev "$(bioctl $ROOTDISK 2>/dev/null | sed -n 's/.*<\(.*\)>$/\1/p')"