Question

you just bought a new hard drive for your computer you plan to use this as a second hard drive to store all your you made files once installed what needs to be done to the dr and what do these two tasks do

Answer 1

If you plan to use it as a back-up then you'd most likely want to keep it external, and connect it via USB. If you're looking to format it, you can use OSX's Disk Utility, or the OS equivalent for Windows or Linux.