Partition Magic - Partition Manager Software
There are two ways to start this function:
1) Click on Disk in the top menu, click Delete All Partitions from the drop down menu.
2) Click Delete All Partition under Disk Operations in the Action Panel.
Delete All Partitions will delete all the partitions in the present chosen disks.
Note: May cause Windows to not start properly when used on partitions containing the boot partition or system partition.
Getting Started
Using MiniTool Partition Wizard