ISO files, often very large, are images that are copied bit by bit from the contents of an optical disc. It is for this reason that they are often referred to as ISO images. They can be mounted as virtual disks on a computer without having to burn them to a CD or DVD first. You will be able to mount an ISO image on Windows and Mac and use it as if it were a CD or DVD.
Method 1 of 2: Mount an ISO image on Windows
Step 1. Open the menu
Click on the Windows logo which you will find in the lower left corner of your screen.
Step 2. Open
the file explorer.
Click on the folder icon, which you will find in the lower left part of the start window.
Step 3. Find the ISO image to mount
You will most likely find it in the folder where you usually save your downloads. This folder should be listed in the left column of the file explorer. Open all additional files until you find your ISO image.
Step 4. Select the ISO image to mount
Click on it to select it.
Step 5. Click the tab labeled Administration
You will find it in the upper left corner of the window. A toolbar will appear below the tab.
Step 6. Click the Mount button
It can be found in the section called Administration from the toolbar. This will mount the ISO image as a virtual optical disk on your computer.
Step 7. Open the This Computer folder
It's on the left side of File Explorer, but you might have to scroll up or down the contents of that column to see it. Click on it to open it.
Step 8. Open your mounted ISO image
In the file This computer, below the title Disks and peripherals, double-click on the icon representing a DVD placed on a drive and bearing the name of your ISO image. It will open and display its contents.
Method 2 of 2: Mount ISO image on Mac
Step 1. Open Finder
In your Mac's dock, click the blue face icon.
Step 2. Find the ISO image to mount
You will most likely find it in the folder where you usually save your downloads. It should be listed in the left column of Finder. Open all additional folders until you find the one where your ISO image is located and click on it to open it.
Step 3. Double click on the ISO image
This will immediately mount it as a virtual disk on your Mac.
Step 4. Click the name of the ISO image
You will see its name displayed in the left column of Finder, below the title Peripheral devices. Click on it to open it.