Having Trouble Formatting Disk Manually on Mac OSX

[birdyx]

If you had looked any further,  you’ve would have found this:

http://community.wd.com/t5/WD-My-Cloud-EX2/reformat-hdd-from-wdmcex2-in-pc-or-mac/td-p/871349

You can’t do it on a Mac with Diskutility!