how to make devfs show fdisk updates?

[Benjamin Kaduk]

Dear all,

I have recently been using fdisk(8) to activate additional partitions, but 
have been unable to cause the device nodes corresponding to the new 
partition to appear in /dev other than by rebooting.  (This is on the 
device which contains the root filesystem, so kern.geom.debugflags=16 is 
necessary to perform the fdisk.)
Please advise on how to effect the creation of the device node(s) in a 
non-disruptive fashion.

Thanks,

Ben Kaduk