Full disk encryption is expected to be the top security technology to be adopted this year. Kali Linux has introduced a new security feature called “Emergency self-destruction of LUKS” to their full-disk cryptsetup utility. If entered that would intentionally destroy, rather than decrypting the data on your hard drives at the boot time, it requires a password at boot time to allow the OS to boot and decrypt your drive. At this time, this feature is not yet included in the official version of Kali Linux, as the developers are still discussing and voting for whether the nuke feature should be added or not.
Source: https://thehackernews.com/2014/01/Kali-linux-Self-Destruct-nuke-password.html