disklabel -w -r a disk which doesn't have a label; kernel creates a dummy label with d partition as the whole disk. Disklabel tries to use c partition and gets "device not configured". Fix: Change disklabel to use d partition by default, or modify kernel to create c partition as the whole disk (maybe both c and d). How-To-Repeat: Install factory-fresh disk and try to disklabel it with disklabel -w -r sd1 disktype
State Changed From-To: open->closed Fixed with new slice code.