A kernel panic (sometimes abbreviated as KP[1]) is a safety measure taken by an operating system's kernel upon detecting an internal fatal error in which either it is unable to safely recover or continuing to run the system would have a higher risk of major data loss. The term is largely specific to Unix and Unix-like systems. For Microsoft Windows operating systems the equivalent term is "Stop error", resulting in a bug check[2] screen that presents the bug check code on a blue background in Windows (colloquially known as a "Blue Screen of Death" or BSoD), or on a green background on the Xbox One platform and some Windows Insider builds.