Why is Spinning Wheel happening?

I am still awaiting your answer as per the Time Machine back up I never did until the other day after Superduper did not work due to a bad file I had deleted. then I did a super duper back up and it worked. So What can I do to install my new hard drive?? Serial number is C02CT087DC7C I

am running mavericks.

Lynn

I keep on getting the spinning wheel much to often every time I go to do something it spins. I was told that the hard drive is going bad. I have used super duper to back up my drive for the past year or so. I did have a problem the last back up and there was a bad file that Shirt Pocket helped me with and told me how to delete this bad file and then I was abel to complete the back up. My question is some person told me not to use the clone on the new hard drive because it would make the new drive bad too. Is this true? Is the drive going because of mechanical reasons therefore how would a clone to a new drive be in jeopardy? Thank you

Lynn Heiser