If you got a new hard drive, you probably got a cd or diskette to help you install that drive. If you didn't , go to the mfg. site and download the program, which will run in windows and this will help you install this drive. It will also allow you to format it.
What I would suggest , if the old drive is smaller and somewhat older, is to make the new drive your primary drive. This mfg program will transfer your old drive to the new drive. Then you can disconnect the old drive, try running the new drive alone to make sure it runs ok, and then connect the old drive. Fomat the old one and set it as the 2 drive. This will give you a possibly faster drive in the primary position, not to speak of capacity. When you go to transfer the drive be prepared to wait many hours for this to take place, because its going to copy for a while(don't loose patience, you can take a nap(hours).
You must have the manufacturers site. Meaning an IBM disk may look at a Maxor drive, but an IBM disk will only work on an IBM drive. I have done this many times and you will be amazed how beautiful it works GOOD LUCK
