One could be a partion drive
With hard drive capacities growing so large [now 1-TeraByte], intelligent partitioning has become an issue.
HARD DRIVES are like houses, because each house (hard drive) has its own rooms (partitons). Houses come in different sizes, and may contain any number of rooms (partitions). They can also be expensive, and some are built better than others.
Adding a second hard drive to your system is like buying a vacation home at the shore or the lake. It could be used to store all your digital Media, such as your MP3 collection, your lossless audio files, or photographs.
• PARTITIONS are like rooms in a house, because they separate different parts of a house into distinct areas for different purposes. For example, the kitchen for cooking, bedroom for sleeping, gaming room for playing Counterstrike. Likewise, you can create a partition for all your Games, and another to store your Back-ups, etc.