More of a pre installing question - DBAN Vs USB

[Moltke]

Quick post before work...
Never used dd so quite a noob there.
Is that terminal only? I usually get the GUI stuff

Yes, dd is cli/terminal only, however, gparted uses it as well so I think you could burn LL iso, boot into live, then open gparted and wipe the HDD, for that select create new partition and then click apply, next right-click the new partition and select format and assign the format you want/need to the drive.

Hope this helps!