A DiskPartition is a presentation of a contiguous range of logical blocks that is identifiable by the OperatingSystem via ...

A DiskPartition is a presentation of a contiguous range of logical blocks that is identifiable by the OperatingSystem via the Partition's type and subtype fields. DiskPartitions should be directly realized by PhysicalMedia (indicated by the RealizesDiskPartition association) or built on StorageVolumes (indicated by the PartitionBasedOnVolume association.