Some time ago i created some images that were saved in mdx format using (Daemon Tools). Those were Windows times, but i migrated to Debian since then.
I created a Windows virtual-box machine in order to use them but unfortunately it does not allow to mount them in this format.
In order to convert them you will have to install a small package called iat using command sudo apt-get install iat . It is found in the default repo.
One it’s installed , just run iat old_image.mdx old_image.iso