What is the history of Ctrl + Alt + Del? Why has Ctrl + Alt + Del historically been a combination used for restarting computers, and who introduced it? - Quora
Ctrl alt del buttons Royalty Free Vector Image
The Mac Control + ALT + DELETE Equivalent for Mac OS X | OSXDaily
VirtualBox上のWindowsゲストにCtrl-Alt-Delを送信する[VirtualBox関連] - Solaris User