IMG file icon

IMG File Extension

Macintosh Disk Image

What is IMG file?

Files with the IMG extension are disc images used in Mac OS. After generating the image, the structure of data is not changed, therefore they can be used to store data as an exact copy, so that they can be mounted in a virtual drive and read as an original disc. This may be a diskette image, an external hard drive image or CD/DVD image/

IMG files were standard disc image format in Mac OS 9 systems and its older versions. Along with deployment of the new version of the system – Mac OS X – IMG image files were substituted with the DMG format, however, IMG files still can be used in the new version of the system.

Converting IMG files

IMG format can be easily converted to other image file formats using dedicated software. In some cases it is takes only to manually change the IMG extension into, for instance - ISO. However, users should remember that not every program is able to interpret files after manual change of extension.

Programs which support IMG file extension

Below you will find an index of software programs that can be used to open IMG files divided into 2 categories according to system platform supported. Files with IMG suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support IMG file

Updated: 07/01/2019

How to open file with IMG extension?

Being unable to open files with IMG extension can be have various origins. On the bright side, the most encountered issues pertaining to Macintosh Disk Image files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The list below will guide you through the process of addressing the encountered problem.

Step 1. Download and install Floppy Image

Install software to open IMG file Problems with opening and working with IMG files are most probably having to do with no proper software compatible with IMG files being present on your machine. This one is an easy one. Select Floppy Image or one of the recommended programs (for example, Apple Disk Utility, All Image) and download it from appropriate source and install on your system. Above you will find a complete listing of programs that support IMG files, classified according to system platforms for which they are available. If you want to download Floppy Image installer in the most secured manner, we suggest you visit Towodo Software website and download from their official repositories.

Step 2. Update Floppy Image to the latest version

Update software that support file extension IMGIf the problems with opening IMG files still occur even after installing Floppy Image, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Floppy Image is available. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. If you have an older version of Floppy Image installed, it may not support IMG format. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Floppy Image.

Step 3. Set the default application to open IMG files to Floppy Image

If you have the latest version of Floppy Image installed and the problem persists, select it as the default program to be used to manage IMG on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Associate software with IMG file on Windows

The procedure to change the default program in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the IMG file
  • Click Choose another app and then select More apps option
  • Finally select Look for another app on this PC, point to the folder where Floppy Image is installed, check the Always use this app to open IMG files box and conform your selection by clicking OK button
Associate software with IMG file on Mac

The procedure to change the default program in Mac OS

  • By clicking right mouse button on the selected IMG file open the file menu and choose Information
  • Open the Open with section by clicking its name
  • Select the appropriate software and save your settings by clicking Change all
  • A message window should appear informing that This change will be applied to all files with IMG extension. By clicking Continue you confirm your selection.

Step 4. Check the IMG for errors

Should the problem still occur after following steps 1-3, check if the IMG file is valid. Being unable to access the file can be related to various issues.

Check IMG file for viruses
1. Verify that the IMG in question is not infected with a computer virus

If the file is infected, the malware that resides in the IMG file hinders attempts to open it. Scan the IMG file as well as your computer for malware or viruses. IMG file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with IMG extension is complete and error-free

If you obtained the problematic IMG file from a third party, ask them to supply you with another copy. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. When downloading the file with IMG extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Ensure that you have appropriate access rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Switch to an account that has required privileges and try opening the Macintosh Disk Image file again.

4. Verify that your device fulfills the requirements to be able to open Floppy Image

If the system is under havy load, it may not be able to handle the program that you use to open files with IMG extension. In this case close the other applications.

5. Verify that your operating system and drivers are up to date

Latest versions of programs and drivers may help you solve problems with Macintosh Disk Image files and ensure security of your device and operating system. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle IMG files.

Do you want to help?

If you have additional information about the IMG file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on IMG file.

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