How to delete the os in my old boot drive

[LvlOneM]

im not sure as to how to delete the OS files like Users, Program Files, Program Files(x86), Windows
its all that is in the drive so if theres an option to just clean the drive then that would be perfectly fine, especially if its a simple solution 😛

 

[Alabalcho]

Just delete them, one you've booted from the other drive. Or reformat the whole volume.