illumos gate

       skip=n

           Skips n input blocks (using the specified input block size) before
           starting to copy. On seekable files, the implementation reads the
           blocks or seeks past them. On non-seekable files, the blocks are
           read and the data is discarded.

However, the dd still does always read the blocks in while loop, resulting with long execution time compared to gnu dd.

test with something like:

dd if=/dev/dsk/c3t0d0 bs=512 skip=2097152 count=1 of=/dev/null