Apparatus for managing cache loss and operation method thereof

A method of operating a storage device including a cache and a non-volatile memory, the method comprising:

• receiving a reset command from a host;
• performing device reset in response to the reset command;
• determining whether there is cache information related to data remaining in the cache without being stored in the non-volatile memory before the device reset;
• in a presence of the cache information, transmitting information indicating cache loss to the host;
• receiving a read command for the cache information from the host after transmitting the information indicating cache loss;
• and
• transmitting the cache information to the host in response to the read command.

A non-transitory storage medium storing instructions that, when executed by a storage device including a cache and a non-volatile memory, cause the storage device to perform at least one operation, the at least one operation comprising:

• receiving a reset command from a host;
• performing device reset in response to the reset command;
• determining whether there is cache information related to data remaining in the cache without being stored in the non-volatile memory before the device reset;
• in a presence of the cache information, transmitting information indicating cache loss to the host;
• receiving a read command for the cache information from the host after transmitting the information indicating cache loss;
• and
• transmitting the cache information to the host in response to the read command.