How to format a hard drive for use on a PC or Mac computer

To format a hard drive before you start using it in Windows, use the Disk Management utility; on a Mac, use Disk Utility.
Ars Technica

Can I reformat an old Dish DVR harddrive for use in my PC.

We recently switched over from Dish Network to Direct TV. I have the old DVR from Dish that has a Maxtor 120gig harddrive in it. Can I reformat it for use in a PC? Is there anything special I have to ...