MEMORY SYSTEM AND OPERATING METHOD SUPPORTING FAST BOOT USING HOST MEMORY BUFFER AND DEFAULT ENABLED INFORMATION

Embodiments of the present disclosure relate to a memory system and an operating method of the memory system. According to embodiments of the present disclosure, the memory system may receive a default enabled information from the host. The default enabled information indicates whether the host maintains a configuration of a host memory buffer in the host and target data stored in the host memory buffer when the memory system is in a low power mode state in which power supplied from the host is cut off.