So the new safer proposal is:
offst=$( expr \
$( grep -a -o -b -m 1 CD001 cdimage.iso \
| head -1 \
| sed -e 's/:/ /' \
| awk '{ print $1 }' ) - 32769 )
Afterwards $offst should hold a number > 0, which may be used with mount
option -o offset=.
I really appreciate the help on this very specific and technical issue, but I am not sure it is worth the effort. As I said, it can be mounted with dosbox.
And indeed, the game is the french version of "The Magic School Bus Explores the Solar System". For those interested, it can be easily found a popular french website specialized on "abandonware". It is not legal but the website has the following rules that:
- game must be older than 2004 - game must not be sold anymore, at least in its french version- beneficiaries must not have say that they don’t want the game freely available
Regards, Yvan
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