Create Bootable Disk

When you wipe disk or partition, you can find "SYSTEM DISK" or "SYSTEM PARTITION" from list, it means the system partition where operating system locates and which disk it is. If you want to wipe the "SYSTEM DISK" or "SYSTEM PARTITION" you can choose it and click "Next" to select a wipe algorithm, then software ask you whether to create boot disk, if you have created a boot disk, you can choice "Skip creating bootable disk for FreeDOS" or else to create boot disk.

Create the bootable disk, and reboot your computer with this bootable disk to carry out wiping operation.