What to Do When Your Hard Drive Fails
Like every piece of hardware, hard drives can fail. Mechanical hard drives, in particular, have moving parts that can (and eventually will) stop working. Even solid-state drives, which have no moving parts, can fail. Every drive has a limited lifespan before it kicks the bucket.
This is why you should always have a good backup—one day, your hard drive will fail, and you may not be able to predict it. But if your drive is acting a little wonky, you may be able to catch it before it dies completely.