How to Mount an ISO File on Your Computer

What mounting an ISO file actually does

Mounting an ISO file makes your computer treat it like a physical disc — a CD, DVD, or Blu-ray — even though it's just a single file sitting on your hard drive. When you mount it, your operating system creates a virtual disc drive, and you can open files from the ISO the same way you'd open files from a real disc you inserted into your computer. The ISO file itself doesn't change; mounting is temporary and only lasts until you unmount it.

This matters because ISO files are how software, operating systems, and large collections of files get distributed online. Instead of mailing you a physical disc, a company sends you an ISO file. Mounting lets you install from it or access what's inside without burning it to an actual disc first — which saves time and blank discs.

Key Takeaways

Mounting an ISO file creates a virtual disc drive your computer can read, without changing the ISO file itself.
On Windows 10 and later, right-click the ISO file and select "Mount" — no additional software needed.
On Mac, double-click the ISO file to mount it automatically; on Linux, use the file manager or terminal command.
After you finish using the ISO, right-click the virtual drive and select "Eject" to unmount it.
If mounting doesn't work, your ISO file may be corrupted, or you may need third-party software like WinRAR or 7-Zip.

Mounting an ISO on Windows 10 and later

Windows 10 and Windows 11 have built-in ISO mounting, so you don't need to install anything. Find the ISO file on your computer — usually in your Downloads folder or wherever you saved it. Right-click the ISO file name and look for an option that says "Mount". Click it, and Windows creates a virtual disc drive.

After mounting, a new drive appears in File Explorer with a disc icon. Open it the same way you'd open any folder. If you need to run an installer from the ISO, double-click the setup file. When you're finished, right-click that virtual drive in File Explorer and select "Eject" to unmount it. The virtual drive disappears, but your ISO file stays on your hard drive unchanged.

If you don't see a "Mount" option when you right-click, your Windows version may be older than Windows 10, or the file association got changed. In that case, move to the third-party software section below.

Mounting an ISO on Mac

On Mac, mounting is even simpler — just double-click the ISO file. The system mounts it automatically, and a virtual disc appears on your desktop and in Finder. You'll see it listed in the sidebar under "Devices" with a disc icon. Open it like any folder to see what's inside.

When you're done, drag the virtual disc to the Trash, or right-click it and select "Eject". The disc disappears from your desktop, but the original ISO file remains in your Downloads folder or wherever you stored it. If double-clicking doesn't work, the ISO file may be corrupted, or you may need to use a third-party tool.

Mounting an ISO on Linux

Linux offers multiple ways to mount an ISO. The easiest is usually through your file manager — right-click the ISO file, look for "Mount" or "Open With", and select it. The virtual disc appears in your file manager sidebar, and you can browse it like a regular folder.

If your file manager doesn't have a mount option, you can use the terminal. Open a terminal window, create a folder to act as a mount point (for example, mkdir ~/mnt_iso), then type sudo mount -o loop /path/to/file.iso ~/mnt_iso, replacing the path with your actual ISO file location. When you're finished, type sudo umount ~/mnt_iso to unmount it. If you're not comfortable with terminal commands, stick with the file manager method.

What to do if mounting fails

If you right-click the ISO and don't see a mount option, or if mounting produces an error, the file may be corrupted. Try downloading the ISO again from the source — sometimes downloads get interrupted and produce broken files. If the file is large (over 4 GB), the read is more likely to have failed partway through.

Another common cause is that the ISO file got associated with the wrong program. On Windows, right-click the ISO, select "Open with", and choose "Windows Explorer" or "File Explorer". On Mac, right-click, select "Open With", and choose "Disk Utility". This resets the association and often fixes the problem.

If mounting still doesn't work, use third-party software. WinRAR, 7-Zip, and PeaZip are free programs that can open and extract ISO files on Windows. On Mac, The Unarchiver works. These programs don't create a virtual disc — instead, they extract the contents to a folder — but you get access to the files inside.

When to extract instead of mount

Sometimes extracting the ISO is better than mounting it. If you only need a few files from inside the ISO, extraction is faster. If you're installing software that requires the disc to stay mounted the whole time (some older games do this), mounting is the right choice. If the ISO contains an installer that runs once and then you're done, either method works.

Extraction creates a folder with all the ISO's contents copied out. This takes up more hard drive space than mounting does, but the files are easier to access and you don't have to remember to unmount later. If your hard drive is nearly full, mount instead of extract.

Frequently Asked Questions

Can I mount multiple ISO files at the same time?

Yes. Each ISO you mount gets its own virtual drive letter (on Windows) or its own disc icon (on Mac and Linux). You can mount as many as your system has resources for, though mounting many large ISOs at once can slow your computer down.

Does mounting an ISO use up hard drive space?

No. Mounting only creates a virtual reference to the ISO file; it doesn't copy anything. The ISO file itself takes up space, but mounting doesn't add to that. Extracting the ISO, by contrast, does use extra space because it copies all the contents to a new folder.

What if the ISO file is corrupted?

A corrupted ISO usually won't mount, or it will mount but show errors when you try to open files inside it. read the ISO again from the original source. If it keeps failing, the source file may be corrupted — contact whoever provided it or try a different read link.

Can I edit files inside a mounted ISO?

No. A mounted ISO is read-only — you can open and copy files from it, but you can't change or delete them. If you need to modify files, extract the ISO to a folder first, edit the files there, and then create a new ISO if needed.

Do I have to unmount the ISO when I'm done?

It's good practice to unmount it, but it's not urgent. An unmounted ISO just sits there taking up space. Unmounting frees up the virtual drive letter (on Windows) and keeps your system cleaner. If you restart your computer, all mounted ISOs unmount automatically.

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.