AWS (Amazon Web Services) automatic file partitioning

I have a questions regarding AWS(Amazon Web Services). Suppose I host 1 GB of data( of say, a game) on AWS, and give my users an installer file which downloads the 1 GB data from AWS. This 1 GB can be divided into, say 4 parts of 250 mb each. If I add another segment of, say 1 mb and increase the partitions to 5, will AWS acutmatically divide the 1GB of data equally among the 5 partitions(200 MB each). How will this work?