Hi again,
i wrote:
>   $ cat backup.iso >> prefix_file
> Then you could mount it on Linux by:
>  $ mount -o loop,sbsector=$TheOffset \
>    backup.iso /mnt/
This should of course be
   $ mount -o loop,sbsector=$TheOffset \
     prefix_file /mnt/
as backup.iso is not altered by above cat.
Have a nice day :)
Thomas