Clobbered Swap Partition

["Brent A. Fulgham" <bfulgham@xpsystems.com>]

I know this is fixed in the latest GnuMach, but I have already
experienced the swap-partition clobbering and wondered how to go about 
resetting a Linux swap partition.

Do I need to delete the partition and re-create it in cfdisk?  Or can
I run a mkfs sort of utility to write the proper signatures?

If cfdisk is required, I suppose I must actually DELETE the partition
before re-writing it, because I tried to just change the label under
cfdisk, and that did not work.

Thanks,

-Brent