Western Digital updated its WD SmartWare Macintosh software on Monday to version 1.3.6. This version is compatible with OS X 10.9, 10.8, 10.7, Mac OS X 10.6, and 10.5. When you download and install this new version, it automatically uninstalls the old version.
The update addresses a nefarious rare issue in which WD Drive Manager, WD Raid Manager and WD SmartWare software applications may cause data loss or cause a "repartition and reformat of their Direct Attached Storage (DAS) devices without customer acknowledgement." On their community board,