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RELEASE.TXT
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1993-04-14
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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.