http://www.macdiskrecoverysoftware.com/restore-data-from-external-hard-disk-on-mac.html
WD external hard drive data recovery Mac retrieves data from external hard disk drive on Mac OS; recover files on Mac after accidental deletion,unintentional formatting,virus attack or abrupt removal of external hard drive
2. Accidental Deletion: Sometimes users need to remove some of
their useless data to free some space on their Western Digital
hard dive. In case of deleting unwanted data, users delete
important data by mistake.
Accidental format: Another responsible reason for data loss
over your WD external hard disk is accidental format.
Virus Infection: WD digital hard disk may get attacked by
harmful viruses, which causes data loss from that particular
device.
Other Reasons: File system corruption, improper ejection of the
device while connected to computer, bad sectors on the WD
external drive etc.
3. In case, you are facing data loss
from WD external hard drive due to
any of the mentioned data loss
scenarios and want to recover data
on Mac system, then do not
worry!!! As, Mac Disk Recovery
Software is skilled enough to bring
back all your data lost from WD
external hard drive in safe and
sound manner.
4. This software has unique and special built-in features
The application restores data on basis of different
elements of file such as file name, extension, size
and creation date
Restore data from WD external hard drives lost
after sudden removal while exchanging
Capable enough to effectively execute data
recovery on Mac OS X Lion, Leopard and Snow
Leopard
Successfully recover files after accidental deletion,
unintentional formatting, virus attack & volume
header corruption