Reformatting WD external hard drive for use with an iMac OS X 27 inch computer

[Baffledinmexico]

Can you please direct me to the information I need on how to reformat the WD external hardrive I just purchased for my iMac computer.

[Trancer]

Welcome to the Community.

The following article contains detailed instructions:

http://wdc.custhelp.com/app/answers/detail/a_id/3865/