A data storage device includes a nonvolatile memory device; and a controller suitable for: performing a recovery operation for the nonvolatile memory device in response to a sudden power-off based on a recovery state of the nonvolatile memory device; updating the recovery state of the nonvolatile memory device while performing the recovery operation to a predetermined recovery state after performing a repair operation for at least one open memory block of the nonvolatile memory device in the recovery operation; and performing a write operation from after a position where the repair operation is performed in the at least one open memory block, in the predetermined recovery state.