Wipe partition table / MBR from a drive | How do I wipe the partition table from a hard drive? This command will wipe the partition table and master boot record. Warning! Backup any and all data first! dd if=/dev/zero of=/dev/sdX bs=512 count=1 Where /dev/sdX is the location of the drive you wish to wipe. For instance, if the drive is /dev/sda, change that
