My mid 2012 macbook pro uses a HGST 1 TB HDD. One day, the drive started making weird noises. I opened it, and recorded.
[video="https://www.youtube.com/watch?v=kVyLoUYgSLI"][/video]
[video="https://www.youtube.com/watch?v=kVyLoUYgSLI"][/video]