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disk image

What is a disk image?

A disk image is a copy of the entire contents of a storage device, such as a hard drive, DVD, or CD. The disk image represents the content exactly as it is on the original storage device, including both data and structure information. A disk image of a hard drive may be saved as a virtual hard disk (VHD).

Uses of disk images include:

  • Burning CDs and DVDs.
  • System backup.
  • Disk cloning.
  • Computer forensics.
  • Data recovery.
  • Creating a portable version of the user's home system for travel.
  • Distribution of operating systems as a LiveCD.

Learn More About IT:
> Wikipedia has an entry for disk image.
> Wise Geek answers the question 'What is a disk image?'

This was last updated in July 2009

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