Checking That the ISO Works

Open a terminal, and then go to the folder where the ISO image has been downloaded. As an example, if you saved it to your disk in Firefox, it will have saved it to the Desktop folder in your home folder:

foo@bar:~$ cd Desktop

To test that the ISO image works, you are going to mount it and access the files in a particular folder. First, create this folder:

foo@bar:~$ mkdir test_iso

Now mount it on that folder:

foo@bar:~$ sudo mount -o loop -t iso9660 my_iso_file.iso test_iso

That's it! Now you can browse the folder test_iso.