I had used a Seagate external HD as Time Machine back up for a year or so. Since I got a gift of a better EHD now I wanted to erase all data in the old EHD. I thought a simple Format through Disk Utility would be easy.
Recently I updated my MacBook Pro 15″ into Mavericks. Today when I tried to open Disk Utility, it did not open, with the following error:
You can't use this version of the application "Disk Utility" with this version of OS X. You have "Disk Utility" 13.
Where shall I find Disk Utility suitable for Mavericks? Is there any other easy procedure to empty my EHD?