diskimage

noun
UK /ˈdɪsk ˌɪmɪdʒ/
US /ˈdɪsk ˌɪmɪdʒ/

A disk image is a computer file that holds an exact copy of a whole disk.

She made a disk image of her laptop before installing the new software.


OTHER MEANINGS

2. A single file that contains the complete contents and structure of a storage device.

The technician restored the server from a disk image.

3. An ISO or similar file used to create a CD, DVD, or USB copy.

Download the disk image and burn it to a USB stick.

4. A saved copy of a computer's operating system and files used for recovery.

Keep a disk image so you can recover quickly after a crash.