scottlinux.com | Linux Blog

Securely Wipe Hard Drive in Linux | To wipe a hard disk down to zeros, use the dd command. $ sudo dd if=/dev/zero of=/dev/sdX bs=1M Where /dev/sdX is the drive you want to zero out. Be extremely careful – there is no undo! For example, this zeros out the specific disk “/dev/sdf” on my system: stmiller@brahms:~$ sudo dd if=/dev/zero of=/dev/sdf bs=1M This