Western Digital WD Dual-Option USB External Drive User Manual - Manual (Page 19)

WD DUAL-OPTION EXTERNAL USB HARD DRIVE
USER MANUAL
USING THE BACKUP SOFTWARE – 15
Mac OS X users: Select the types of files to back up in the following window. Make your
choice and click Next.
4. Select the drive on which to store your backup files. Click Next.
Note: The destination drive cannot be the same drive selected as the source drive. If you
have multiple external drives connected, the drive on which the button was pressed is the
default destination.
5. Select the frequency of automatic backups and click Next.