In this paper, we propose a novel Instant booting scheme that makes use of both the byte-unit random access and non-volatile characteristics of SCM(Storage Class Memory). The proposed scheme can Initialize a system instantly by restoring system contexts including CPU, memory and device context lightweightly after a system turns off and on, 1n addition, it can maintain the system integrity even under a sudden power failure, Real implementation based performance evaluations have shown that the instant booting reduces the system initialization time up to 0,34 second while the time takes around 26 seconds in the conventional booting.