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(fdutils.info)Sector skewing options

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Sector skewing options
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   In order to maximize the user data transfer rate, the sectors are
arranged in such a way that sector 1 of the new track/head comes under
the head at the very moment when the drive is ready to read from that
track, after having read the previous track. Thus the first sector of
the second track is not necessarily near the first sector of the first
track.  The skew value describes for each track how far sector number 1
is away from the index mark. This skew value changes for each head and
track. The amount of this change depends on how fast the disk spins,
and on how much time is needed to change the head or the track.

`--absolute_skew ABSOLUTE-SKEW'
     Set the absolute skew. (The skew value used for the first formatted
     track)

`--head_skew HEAD-SKEW'
     Set the head skew. (The skew added for passing from head 0 to head
     1)

`--track_skew TRACK-SKEW'
     Set the track skew. (The skew added for seeking to the next track)

   Example: (absolute skew=3, head skew=1, track skew=2)

     track 0 head 0: 4,5,6,1,2,3	(skew=3)
     track 0 head 1: 3,4,5,6,1,2	(skew=4)
     
     track 1 head 0: 1,2,3,4,5,6	(skew=0)
     track 1 head 1: 6,1,2,3,4,5	(skew=1)
     
     track 2 head 0: 4,5,6,1,2,3	(skew=3)
     track 2 head 1: 3,4,5,6,1,2	(skew=4)