/LBN=(START=x,END=y) or
  /LBN=(START=X,COUNT=y)

 	Connect an LD device to a physical disk, starting at LBN x, with either
 	an end-lbn specified or a count. The ending lbn may not be beyond the
 	end of the physical device. The count plus the starting lbn may also
 	not be beyond the end. With this qualifier it is possible to partially
 	map a physical disk.