I have a Mac Pro I got in 2008. The original hard drive is failing. I have purchased a replacement drive and have backed up all my data using Time Machine. I will want to put the Mac OS on the new drive upon installation. The Apple Store said they would image a copy of the OS to the new drive free of charge. The CPU is a beast, so i would rather not have to lug it around if i can avoid it. Is there an easy way for me to migrate my OS installation from one hard drive to another?