Darik’s Boot And Nuke
Darik’s Boot and Nuke (DBAN) is free erasure software designed for consumer use. DBAN users should be aware of some product limitations, including:
No guarantee that data is removed
Limited hardware support (e.g. no RAID dismantling)
No customer support
via Darik’s Boot And Nuke | Hard Drive Disk Wipe and Data Clearing.