How to mount an ISO file?

Maybe, instead of installing additional software, you can use what the system has to this end:

1. Create a directory to serve as the mount location:

   sudo mkdir /media/iso
   

2. Mount the ISO in the target directory:

   sudo mount -o loop path/to/iso/file/YOUR_ISO_FILE.ISO /media/iso
   

3. Unmount the ISO:

   sudo umount /media/iso
   

On your desktop will appear the mounted ISO.

Try mounting it using a GUI.

Navigate to the *.iso file using a file manager, then Right click -> Open with Archive Mounter.

Or you can install the Furius ISO Mount. It is available in the Ubuntu Software Center:

sudo apt-get install furiusisomount

Here are some screenshots:

Furius ISO Mount - Project Page

I found the easiest and fastest way to handle the ISO file in Ubuntu 14.04 was to right click on the ISO file, choose Disk Image Mounter and then simply proceed to the newly opened directory:

In case you don't have installed, you can use this command in terminal to install it:

sudo apt-get install gnome-disk-utility