What is a Disk Image File?
Disk Image is a special file to store entire content of a disk or a volume. Any type of disks is scanned and stored under Disk Image including hard disk, tape drive, flash drive, USB and Optical media like CD, Blue-Ray Disk and DVD.
Common Usages of Disk Image
Disk Image was introduced at the time of Floppy disks. It was used to create a duplicate database of disks.
A Disk Image is considered a photocopy of an entire disk. It is often used to create a duplicate file of CD and DVD in .ISO file format.
When a program is installed through a browser, MacOS distributes the app in Apple Disk Image.
Windows also distributes a program in .ISO extension.
A virtual machine monitor stores their virtual machines in hard disk.
It is categorized into Disk Image Files.
Common File Formats
.DMG – Apple disk image file
.RAW – RAW disk image
.MDF – Alcohol 120% disc image
.ISO - Binary image of CD/DVD
.NRG – Nero or Nero Burning ROM image file
.BIN – Binary disk image
How to access Disk Image
It can be accessed in various programs depending on the file format they are using. You can also view Disk image using a third party app. Trust on paid tools.