Then we will explain how to mount ISO and NRG images in linux, in this case as always I rely on linux mint, but this solution is for the vast majority of linux distros.
The first step is to create a directory "/ media" which will be where we mount our image.
sudo mkdir / media / nombredeldirectorioquequeramosponer
Mount ISO image
------------------------ After you have created the directory as discussed above, run the following if you want to more easily situate before in the directory where you have your file (*. iso). The command in this case to run is as follows:
sudo mount-t iso9960-o loop file.iso / media / nombredeldirectorioquepusimosantes
Mount Image NRG (Nero image file)
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In this case everything is exactly the same except change the statement to be executed, which in this case would be:
mount-t iso9660-o loop, offset = 307200 archivo.nrg / media / nombredeldirectorioquepusimosantes
When mounting the image we do not see the need to record these images on storage media like DVDs or CDs, we just have to call in the application that request the image we create. This is a great need for example to test video games that you please throw with PlayOnLinux style applications and confirm that work correctly on your linux distro.
Original source: http://bronch.wordpress.com/2006/05/24/como-montar-archivos-iso-bin-mdf-y-nrg-en-linux/