Just deleting your files off of your hard drive does not make them go away. You are going to need a decent data killer if you don’t want your deleted files to be recovered. Data Killer is just what you need for this job. It can clean any hard disk instantly by changing the magnetic alignments of the data. This can handle magnetic tips as well.
These will be available in multiple sizes just in case you want to wipe multiple disks and drives at the same time. They can handle up to 14 disks at the same time. The Data Killer is useful if you want to murder your data.