O&O PartitionManager is an advanced tool which allows you to split your hard disks into partitions, change their size, and move disks to other locations. The integration of our multiple award-winning O&O SafeErase for deleting the data you no longer need, truly makes this product the only one of its kind. The Start CD from O&O PartitionManager is based on Windows PE. As a result, you'll be able to extend, shrink or move system partitions without any restrictions and without having to rely on a functioning Windows operating system!