I've been using DBAN to wipe PCs. This can often take over an hour. Recently someone pointed out that as an alternative, I could just boot from a Windows CD (or a DOS boot disk) and delete or format the partition. These methods just take about 1 or 2 minutes. It seems to me that these methods are not only quicker but also more secure than DBAN and all those other 3rd party tools for secure wiping PCs (because DBAN doesn't actually delete the partitions, does it?).
Is this true or am I missing something?