Fomat My Book for Mac

I am using a 1TB My book for Mac which was formatted before I upgraded to Yosemite Ver 10.10.1. I can no longer use the drive and I can’t find a way to format it.

The instructions I have tells me to double left click on on the Internal Mac Drive (done) then choose Applications (done) then Utilities, which I can’t find, I have changed the view with the Columns button but still no Utilities button.

Can anyolne please help or tell me where I am going wrong or do I need to buy a new drive ?.

Thank you in advance



Take a look at this link for detailed instructions on how to format the drive.

How to partition and format a WD drive on Windows (8, 7, Vista, XP) and Mac OSX