From: "Frank Haber" 

Let us know what it was.  The one and only time I saw that error message,
it was a little disagreement between Partition Magic ?5 and DISKPREP/NT4
over what the proper end sector was for a partition (FAT).  PM made C: a
teensy bit bigger.  NT wrapped.  Boom.

--- BBBS/NT v4.01 Flag-5