Operating method for user system including host and memory system

An operating method of a user system which includes a host and a memory system, the host including an operating system and a device driver, the memory system having first and second storage devices, the method comprising:

• deleting a first original file, using the operating system;
• sending first delete information of the first original file from the operating system to the device driver;
• comparing, at the device driver, the first delete information and a mapping table;
• and
• if the comparison result indicates that the first delete information is included in the mapping table,
• sending converted delete information corresponding to the first delete information from the device driver to the memory system, and
• setting, at the memory system, a selected page of the second storage device to an invalid page, the selected page being a page in which a first copied file corresponding to the converted delete information is stored,
• wherein the operating system recognizes the first storage device as a main device of the memory system, and
• wherein the mapping table includes mapping information indicating a relationship between addresses of the first and second storage devices corresponding to a plurality of files stored in the first and second storage devices.

An operating method of a user system including a host and a memory system, the host including mapping data, the memory system including a main memory device storing a plurality of main memory units and a secondary storage device storing a plurality of secondary storage units, the method comprising:

• deleting, at the memory system, a first data unit from among the plurality of main data units;
• determining, at the host, whether the secondary storage device stores a copied data unit, the copied data unit being a data unit from among the plurality of secondary data units that is a copy of the first data unit, the determining being based on the mapping data;
• and
• if the host determines that the secondary storage device stores the second data unit,
• sending delete information from the host to the memory system, and
• deleting, at the memory system, the second data unit, based on the delete information.