Source : Free On-Line Dictionary of Computing

warm boot
     
         A {boot} from {power on}, where the {CPU}
        and {peripherals} are already powered up (warm).
     
        A warm boot might be performed after a {software} {crash} or
        a {hardware} {reset}.
     
        Contrast {cold boot}.  See also {reboot}.
     
        [{Jargon File}]
     
        (1998-04-28)