CD's and Hard Drives are organized mostly in the same way.
The one extra organization scheme HD's have that CD's don't are cylinders. A cylinder is a section of all of the platters in the HD accessed by the same Track.
IE Cylinder 1 is made up of Track 1 on Platter 1 + Track 2 on Platter 2..... etc.
So, I guess to answer the question in this post, CD and Hard Drives both have multiple tracks. Just think about mucis CD's. Each song is dubbed, a track (even though it's likely that the song isn't contained in a single track).