To securely delete entire disks or partitions, select Disks/Partitions on the start page.
Securely delete hard disks and partitions
In the list that’s shown you’ll be able to select the partitions you want deleted. You can also select the disk itself if you want to delete all partitions along with the non-partitioned sectors. You have the option of either showing or hiding the non-partitioned sectors. When selecting a system drive, a security prompt will appear when you click Continue. If you didn’t select a system drive or have answered the security prompt successfully, clicking Continue will bring you to the selection of a deletion method. By clicking Return your selection will be canceled and your data remains unchanged.
To delete the entire computer securely, click Select all (TotalErase).
A special feature of the Workstation and Server Editions is their ability to simultaneously delete partitions on dissimilar physical disks or entire hard disks. This is different than in the Professional Edition where deletion is performed successively. If, for example, you have an internal hard disk and a USB Stick connected, O&O SafeErase Workstation and Server Editions can delete both disks at the same time. This can save you a considerable amount of time when working with large data volumes.