Just purchased a 4TB My Book for the wife and tried to partition it into 2 2TB partitions. Unsuccessful. Is there any way to reformat the drive back to the original 4TB NTFS setting? And, how can I successfully partition it into 2 partitions?
Just format the drive like a normal unit and then follow the instruction on the link below.
Please see if the following link helps
[How to install, partition, format, or reformat a WD external hard drive in Windows XP](http://support.wdc.com/KnowledgeBase/answer.aspx?ID=207)