On Wed, 25 Dec 2013, Steven Hirsch wrote:
Turns out the image is indeed 80-cylinder DS. I was
able to write a working
diskette on a 1.2M HD drive from within the xtrs emulator (you can assign
physical drives to the emulated machine - nice feature). Still to be
determined is why the ImageDisk conversion fails.
When I read the working disk with IMD, it complains about "deleted data
marker" on track 39 but continues to read all 80 cylinders. That is probably
what's throwing the DMK2IMD tool for a loop. It has a couple of switches
that seem pertinent and I'll give that a try tomorrow. Would be nice to
understand in case this comes up again.
I updated to the latest ImageDisk (v1.18) and tried the DMK2IMD conversion
again with both variations of the data address mark translation switch.
Still no go.
Since I'm able to read the diskette back in IMD, I've accomplished my goal
of capturing it in IMD format (writing the image back does yield a working
disk!) But, there does appear to be some issues with the DMK2IMD
translation.
Steve
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