Please can you tell me: does Partition Assistant Standard Edition allow disk erasing with Windows OS installed on it?
Do you mean that you do not want to keep your OS?
You need to create a Win PE bootable disk to do the operartion because the Windows will not allow you delete the OS when it's running.
So you need the bootable disk to boot your PC and get into the Win PE environment to delete the OS.
Thank you for the reply