partition editor , partitioner , and partitioning utility are all names for computer programs used to view , create , change , and delete disk partitions on a computer storage device , most commonly a hard disk , but also a USB flash drive or other storage medium . A partition editor ( also called partitioner or partitioning utility ) is a kind of utility software designed to view , create , alter and delete disk partitions on a computer storage device , most commonly a hard disk , but often a USB flash drive or other storage medium .