Once the process begins, ALL THE DATA ON THE DRIVE WILL BE LOST! This process is Data Destructive and cannot be undone.
The instructions in the articles below are designed to help users reformat and repartition an external drive.The WD Quick Formatter is the recommended way to format WD external drives that use Advanced Format Drives (AFDs).This is necessary in order to optimize the performance of the drive. Once the WD Quick Formatter is finished reformatting the drive, the drive will only have one partition. The WD Quick Formatter is ONLY for external drives.
This answer explains how to use the WD Quick Formatter to format a WD external drive in Windows (8, 7, Vista, or XP) and Mac OSX (Leopard, Snow Leopard, Lion, Mt.