For years, power users have understood the secret of mastering hard drives--hard disk partitioning. Dividing a hard drive into several partitions lets you efficiently organize operating systems, programs, and data. Until PowerQuest's PartitionMagic came along, modifying partitions was a nightmarish task demanding that you back up your data, delete existing partitions, create and format new partitions, reinstall the operating system, and, finally, restore the data (which hopefully wasn't destroyed along the way). But PartitionMagic greatly simplifies the task, putting partitioning in the reach of everyone.