Making an image of a disk drive using Disk Utility
To create an image backup of an external disk drive using the OS X
Disk
Utility found in the Applications/Utilities folder, take the
following steps after attaching the drive to the Apple computer.
-
Open Disk Utility, from the Applications/Utilities
directory.
-
Click on the external disk drive in the left pane of the utility to select it.
-
Click on File, then select New and Disk Image from, e.g.
Disk Image from "TOSHIBA EXT" for an external Toshiba USB drive.
-
You will then be prompted to give the image a name and can select the
directory where you wish it to be stored. You can also select whether the
image will be compressed and whether it will be encrypted.
-
Click on Save to initiate the creation of the disk image. When prompted
that "diskimages-helper wants to make changes. Type your password to allow
this.", provide a password for an account with administrator privileges on the
system. When the image has been created, you will see it listed in the
left pane of the Disk Utility window.
You can then use the OS X
Finder program to view the files stored in the
Apple Disk Image DMG file that was created by double-clicking on
the .dmg file that was created.
