An .img file is usually a disc image: an exact copy of a CD, DVD, or drive packed into one file. You’ll find them with software downloads, old game discs, drivers, and operating system images like Raspberry Pi OS. Windows 11 can open many IMG files without extra software by mounting them as a virtual drive. For the ones it can’t, free tools like 7-Zip will extract the contents. This guide covers every option.
Quick Answer
Double-click the .img file, or right-click it and choose Mount. Windows adds it as a virtual DVD drive in This PC, and you can open it like a disc. If you get an error saying the file is corrupted or can’t be mounted, open it with 7-Zip instead, or write it to a USB drive if it’s an operating system image.
What Kind of IMG File Do You Have?
| Type | Where it comes from | How to open |
|---|---|---|
| CD/DVD disc image | Software, drivers, old discs | Mount in File Explorer |
| Raw disk or SD card image | Raspberry Pi, Linux, device firmware | Write to USB/SD with an imaging tool, or open with 7-Zip |
| Floppy or hard disk image | Virtual machines, very old software | 7-Zip, or a VM or disk-mounting tool |
Method 1: Mount the IMG in File Explorer
- Open File Explorer and find the .img file.
- Right-click it and choose Mount, or just double-click it.
- Open This PC. You’ll see a new DVD Drive with its own letter. Open it to browse or run the files inside (for example, setup.exe).
To remove it when you’re done, right-click the virtual drive in This PC and choose Eject.
If double-clicking opens another program, right-click the file, choose Open with > Windows Explorer, or use Mount directly.
Method 2: Extract With 7-Zip
Windows can only mount images in standard disc formats. For others, use a free archive tool:
- Install 7-Zip from 7-zip.org.
- Right-click the .img file, choose Show more options > 7-Zip > Open archive to browse, or Extract to “filename\” to copy everything out.
7-Zip can read many disk images, including ones with FAT or NTFS partitions.
Method 3: Write an OS Image to a USB Drive or SD Card
If the IMG is an operating system (like Raspberry Pi OS or a Linux distribution for a device), it’s meant to be written to a drive, not opened.
- Install an imaging tool such as Raspberry Pi Imager, balenaEtcher, or Rufus.
- Choose the .img file and your USB drive or SD card.
- Click Write (or Flash/Start). This erases the target drive.
Afterward, Windows may say the drive needs formatting because it uses a Linux file system. Click Cancel; don’t format it.
Method 4: Convert IMG to ISO
Some programs and virtual machines need ISO files. Many disc-style IMG files work if you simply rename the extension from .img to .iso (turn on View > Show > File name extensions first). If that doesn’t work, a disc imaging tool can convert it properly.
Troubleshooting
- “Sorry, there was a problem mounting the file”: The image isn’t a standard disc format, or it’s stored on a compressed or network drive. Copy it to a local folder and try again, or use 7-Zip.
- “The disc image file is corrupted”: Download it again; the download may be incomplete. Compare the file’s checksum with the one on the download page if provided.
- Mount option missing: Another app may have taken over IMG files. Right-click and choose Open with > Windows Explorer, or reset the default in Settings > Apps > Default apps.
- Security warning: Only open disc images from sources you trust. Scan downloads with Windows Security before running programs inside them.
Summary
- Right-click the .img file and choose Mount to open it as a virtual drive.
- Use 7-Zip for images Windows can’t mount.
- Write operating system images to USB or SD cards with an imaging tool.
- Eject the virtual drive when you’re finished.
Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.