i have 3 partitions and the first two (OS and documents) defrag perfectly with no problems. They have 8gb and 5 gb respectively. However, my big e drive doesn't defragment. I contains all my games, ...

Imagine the following: you create a word document and save it. The document is split into tiny bits and accessed as such. At first, the bits are stored next to each other — the file is saved in a ...