Hi all! New to this forum and new to Mac (used to Unix and win) I'm trying to nuke my drives with DBAN from USB. The USB-flashdrive works fine on a PC and boot's correctly but it will NOT boot on my macs? It's a Mac Pro 3.1 and the other one is a Mac Pro 4.1. And no, i do not wish to use the built in DiskUtil.. Any ideas what the issue might be?