Data storage device, memory controller and method of operating the same

A memory controller comprising:

• a processor configured to generate meta-data including a mapping relationship between a logical address used by an external device and a physical address used by the storage;
• a meta-data flush circuit configured to:
• generate a normal meta-slice having a first size including the meta-data in a first operation mode,
• store a meta-page including the normal meta-slice in a storage,
• generate a modified meta-slice having a second size as a part of the normal meta-slice in a second operation mode, and
• store a meta-page including the modified meta-slice and context data including information with respect to a size of the modified meta-slice;
• and
• a meta-data rebuild circuit configured to restore the meta-data based on the context data in a power-on.

A method of operating a data storage device, the data storage device including a storage and a memory controller configured to control the storage, the method comprising:

• generating meta-data including a mapping relationship between a logical address used by an external device and a physical address used by the storage by the memory controller;
• generating a normal meta-slice having a first size including the meta-data in a first operation mode by the memory controller;
• storing a meta-page including the normal meta-slice in the storage by the memory controller;
• generating a modified meta-slice having a second size as a part of the normal meta-slice in a second operation mode by the memory controller;
• storing a meta-page including the modified meta-slice and context data including information with respect to a size of the modified meta-slice by the memory controller;
• and
• restoring the meta-data based on the context data in a power-on by the memory controller.