An IMG file is a disk image, a complete copy of a storage device, such as a hard drive, floppy disk, CD, or DVD. It contains all the data and structural information of the original disk, sector by sector. IMG files are often used for backing up entire disks, creating virtual drives, or distributing software. They can be mounted as virtual drives, allowing users to access the files and folders within the image as if they were on a physical disk. This is particularly useful for installing operating systems or running software that requires specific disk configurations. IMG files can be created using various disk imaging tools and are often compressed to reduce their file size. They are different from image files like JPEGs or PNGs, which store visual data. IMG files store the raw data of an entire disk.