Software & AppsOperating SystemLinux

How To Extract a .img File

Ubuntu 18

In the world of system administration and file management, you may come across a .img file. This is an image file format that’s used by various operating systems, including Linux, Windows, and macOS. In this article, we’ll guide you through the process of extracting a .img file using different methods.

Quick Answer

To extract a .img file, you can use different methods such as mounting the file, using kpartx, cloning the file to a drive, or using a GUI tool like PeaZip. Each method has its own steps and requirements, so choose the one that suits your needs and system setup.

What is a .img File?

A .img file is a raw disk image that can contain both the file system and data. It’s often used for backups, system restoration, or transferring system setups. Extracting these files can be a useful way to access the data within.

Method 1: Mounting the .img File

One of the most straightforward methods to extract a .img file is by mounting it. Here’s how you can do it:

  1. Create a directory to mount the image. Use the mkdir command followed by the directory path. For example: mkdir /mnt/ChromeOS
  2. Mount the .img file using the loop option. The mount command with the -o loop option allows you to mount the file system present in the .img file. For example: mount -o loop image.img /mnt/ChromeOS/
  3. List the contents of the mounted image. Navigate to the directory using cd /mnt/ChromeOS/ and list the contents with ls -l

If the .img file is zipped, you’ll need to unzip it first using the gunzip command before mounting.

Method 2: Using kpartx

kpartx is a tool that can be used to create device maps from partition tables. Follow these steps to use kpartx:

  1. Install the kpartx package. If it’s not already installed, you can install it using your package manager.
  2. Create device maps for the partitions in the image. Run sudo kpartx -av image.img. This will output the names of the device maps it creates.
  3. Access the partitions. After running kpartx, you can access the partitions using /dev/mapper/loop?p?, where the ? should be replaced with the appropriate values output by kpartx.
  4. Mount the desired partition. Use sudo mount /dev/mapper/loop?p? mountpoint, replacing the ? with the correct values.

Method 3: Cloning the .img File to a Drive

Another method is to clone the .img file to a drive, such as a USB pendrive. This can be done using a tool like mkusb:

  1. Clone the .img file to a drive. mkusb can handle both uncompressed and compressed (.img.gz or .img.xz) image files.
  2. View the partitions on the drive. After cloning, you can view the partitions on the drive using commands like sudo lsblk -f, sudo lsblk -m, or sudo parted -ls.
  3. Mount and unmount the partitions on the drive. You can do this as you would normally.

Method 4: Using PeaZip (GUI method)

If you prefer a graphical user interface (GUI), you can use PeaZip to extract the .img file. Here’s how:

  1. Install the necessary i386 dependencies. Run the following commands:
sudo dpkg --add-architecture i386
sudo apt update
sudo apt install libgtk2.0-0:i386 libpango1.0-0:i386 libpangox-1.0-0:i386 libpangoxft-1.0-0:i386 libxft2:i386
  1. Download the PeaZip package. You can download it from their website or using the provided wget command.
  2. Install PeaZip. Use sudo dpkg -i peazip_6.5.1.LINUX.GTK2-2_all.deb.
  3. Launch PeaZip and extract the .img file. Use its GUI to navigate to the .img file and extract it.

Conclusion

Extracting a .img file can be done in several ways, depending on your specific needs and the tools available on your system. Whether you prefer the command line or a graphical user interface, there’s a method that will work for you. Remember to adjust the commands and paths according to your specific setup and file names.

What is the purpose of a .img file?

A .img file is used for backups, system restoration, or transferring system setups. It contains both the file system and data.

Can I extract a zipped .img file directly?

No, you’ll need to unzip the .img file first using the gunzip command before you can extract it.

How do I mount a .img file?

To mount a .img file, create a directory to mount the image, then use the mount command with the -o loop option followed by the path to the .img file and the directory path. Finally, navigate to the directory and list the contents.

What is kpartx and how can I use it to extract a .img file?

kpartx is a tool used to create device maps from partition tables. You can use it to extract a .img file by installing the kpartx package, creating device maps for the partitions in the image, accessing the partitions using /dev/mapper/loop?p?, and then mounting the desired partition.

How can I clone a .img file to a drive?

You can clone a .img file to a drive using a tool like mkusb. After cloning, you can view and mount the partitions on the drive as you would normally.

Is there a GUI method to extract a .img file?

Yes, you can use PeaZip, a graphical user interface tool. Install the necessary dependencies, download and install PeaZip, and then use its GUI to navigate to the .img file and extract it.

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