Partition (when it comes to a hard disk drive) is a part of a hard disk that you create for installing Windows OS and storing your personal data. There is a primary partition that you can use for installing an operating system. Apart from that, there is an extended partition that you can further divide into multiple logical partitions for storing your data (images, audio-video files, documents, etc.). On the other hand, a logical drive is created when you format a partition and assign a drive letter (including the file system) to it.