D2D-2P



                                    RELEASE NOTES

                                   for Version 3.4
                      Changes since the previous Release (2.32)





        New Features (3.4)


        Image structure has been changed to allow comments  in  images  (flag
        /c).  Comments  can  be  defined when creating an image. Comments are
        displayed when an image is used.

        A new switch (/D) can be  used  to  deactivate  boot  virusses;  that
        switch simply disables the boot code.

        New Features (3.3)


        Flag  "/u" forces D2D to format the destination disc. Can be used for
        dubious destination discs.

        Flag "/w" skips the question whether to overwrite a valid destination
        disc  (Currently  it  does  not  skip  the question, but just enables
        overwriting).

        Flag "/q" does not ring the bell (except for fatal errors).

        Flag "/r" enables simple data recovery for  defektive  source  disks.
        This  feature was thought to replace DISKCOPY when a backup copy of a
        already defective disc is needed. This feature can be  combined  with
        flag "/b" (especially if the Bootrecord or the FATs are damaged).

        Recovery  is  done  by  trying  to  read  each  sector of a bad track
        individually. Unreadable sectors are cleared with zeroes (instead  of
        being filled with garbage from the computer's memory).

        As  was seen very soon, it is nice to allow to abort reading a defek-
        tive disc. (For a 5" HD disc there will be more than 40 tries to read
        a track if all sectors are defective)

        Some  internal  tests  make sure that completely damaged disks do not
        cause D2D to crash.









        New Features (3.2)


        The concept of images as virtual discs is supported. Images  are  im-
        plemented as files on a fixed disc.

        BPBs  are  checked  for  consistency  before  being used. There is no
        longer a division by zero if you try to use the  2.88MB  format.  The
        program should be extremely robust now.

        The  program has been internationalized. Currently there are versions
        for American English and German (Hochdeutsch) available.

        Fixed Bugs (3.2)


        Single sided discs could sometimes not be written to  correctly  when
        they were not formatted by D2D. This bug has been fixed.

        Trying  to  use the 2.88MB format does no longer cause the program to
        crash. (But it isn't implemented completly yet)

        Mapped network drives (Novell's NetWare) are now correctly recognized
        as remote drives.

        Fixed Bugs (3.3)


        In  some  cases  there were problems after writing to the destination
        disc had failed. The procedure did not close the swap file; therefore
        the  program  experienced  a  critical error on the next open call to
        that file. This only happened when  SHARE  has  been  loaded  before.
        There  were  also  problems when aborting on that critical error: The
        swap file was not removed (also because of SHARE).

        Tracks with more than 32 sectors (e.g. 2.88MB discs) should  be  able
        to be read now. They were blocked previously.