How to Mount an ISO File on Windows, Mac, or Linux

What mounting an ISO file means and why you might need to do it

An ISO file is a single compressed folder that holds an exact copy of a disc — usually a software installer, operating system, or backup. Your computer cannot read it the way it reads a regular folder. Mounting an ISO file means telling your operating system to treat it like a disc that is already inserted in a drive, so you can install software from it, run programs, or copy files out without burning it to a physical disc first.

You mount an ISO file when you read software that comes in ISO format, when you receive a backup as an ISO, or when you want to run an operating system installer without using a USB drive or DVD. The process is different depending on whether you use Windows, Mac, or Linux, but the end result is the same: your computer sees the ISO as if it were a real disc.

Key Takeaways

Windows 10 and later can mount ISO files by right-clicking and selecting "Mount" — no extra software needed.
Mac users can double-click an ISO file to mount it automatically, or use Disk Utility if that does not work.
Linux users typically use the command line with the mount command or a graphical tool like Furius ISO Mount, depending on their distribution.
Once mounted, the ISO appears as a drive in your file browser and behaves like a physical disc until you unmount it.
Unmounting (ejecting) the ISO is as straightforward as right-clicking the mounted drive and selecting eject or unmount.

Mounting an ISO file on Windows 10 and Windows 11

Windows 10 and later versions have built-in ISO mounting, so you do not need to read extra software. Locate the ISO file on your computer, right-click it, and select Mount from the menu. Within a few seconds, the ISO will appear in File Explorer as a new drive letter (usually the next available one after your existing drives).

If you do not see a Mount option when you right-click, your ISO file may be associated with a different program. Right-click the ISO, select Open with, then choose Windows Explorer or File Explorer. After that, the Mount option should appear on the next right-click.

Once mounted, you can open the drive like any other folder, install software by running the setup file inside, or copy files to your computer. When you are finished, right-click the mounted ISO drive in File Explorer and select Eject to unmount it. The drive will disappear from File Explorer, and the ISO file remains on your computer unchanged.

Mounting an ISO file on Mac

On Mac, mounting an ISO is usually automatic. Double-click the ISO file, and macOS will mount it within seconds. The ISO appears on your desktop as a disc icon and also shows up in Finder under Devices on the left sidebar.

If double-clicking does not work, open Disk Utility (search for it in Spotlight by pressing Command + Space, typing "Disk Utility," and pressing Enter). In Disk Utility, click File in the menu bar, select Open Disk Image, navigate to your ISO file, and click Open. The ISO will mount and appear on your desktop.

To unmount the ISO on Mac, click the eject icon next to the disc name in Finder's sidebar, or drag the disc icon to the Trash. The ISO file stays on your computer; only the mounted version disappears.

Mounting an ISO file on Linux

Linux distributions vary in how they handle ISO files, but most modern desktop environments (Ubuntu, Fedora, Linux Mint) will mount an ISO automatically when you double-click it in the file manager. The ISO appears as a mounted drive in your file manager sidebar.

If automatic mounting does not work, you can mount the ISO from the command line. Open a terminal and create a mount point (an empty folder where the ISO will appear) by typing mkdir ~/mnt/iso. Then mount the ISO by typing sudo mount -o loop /path/to/your/file.iso ~/mnt/iso, replacing the path with the actual location of your ISO file. You will be asked for your password.

To unmount the ISO from the command line, type sudo umount ~/mnt/iso. If you used the file manager to mount it, right-click the mounted ISO in the sidebar and select Unmount or Eject.

What to do if mounting fails or the ISO does not appear

If an ISO file will not mount, the file may be corrupted or incomplete. Check the file size against the original source — if it is significantly smaller, the read did not finish. Delete it and read again.

On Windows, if the Mount option does not appear, try renaming the file to may support it ends with .iso (not .iso.iso or another extension). If that does not work, read a free ISO mounting tool like WinCDEmu or Virtual CloneDrive, install it, and use it to mount the file instead.

On Mac, if Disk Utility fails to open the ISO, the file may use an older or non-standard format. Try downloading a third-party tool like Mounting Master or use the command line: open a Terminal and type hdiutil attach /path/to/file.iso.

On Linux, if the mount command returns a permission error, make sure you included sudo at the start. If it says the file is not a valid ISO, the file may be corrupted or in a different format (like .bin or .cue). Check the original source to confirm the file type.

The difference between mounting and burning an ISO to a disc

Mounting an ISO is temporary and non-destructive — the ISO file stays on your computer, and you can mount it again later. Burning an ISO to a DVD or USB drive writes the contents permanently to that physical media, which you can then use on any computer. Mounting is faster and uses no physical media, but you can only use the ISO on the computer where it is mounted.

If you need to use the ISO on multiple computers or create a bootable installation drive, burning is the right choice. If you just need to install software or access files from the ISO once, mounting is simpler and leaves your ISO file intact for future use.

Frequently Asked Questions

Can I edit files inside a mounted ISO?

No. A mounted ISO is read-only by default — you can copy files out of it, but you cannot change or delete files inside it. If you need to modify the contents, copy the files to a regular folder, edit them there, and then create a new ISO if needed.

Will mounting an ISO use up hard drive space?

No. Mounting does not copy the ISO to your drive or use extra space. It only tells your operating system to read the ISO as if it were a disc. The only space used is the ISO file itself, which was already on your computer.

What if I mount an ISO and then move or delete the original file?

If you delete or move the ISO file while it is mounted, the mounted drive will become inaccessible and you will see an error when you try to open it. Always unmount the ISO before moving or deleting the file.

Can I mount multiple ISO files at the same time?

Yes. Each ISO will mount as a separate drive letter (on Windows) or disc icon (on Mac and Linux), and you can work with them independently. Unmount each one when you are finished.

Do I need special software to mount an ISO, or does my operating system do it for free?

Windows 10 and later, Mac, and modern Linux distributions all have built-in ISO mounting at no cost. Third-party tools are only needed if your operating system is older or if the built-in method does not work for your specific ISO file.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.