Control apparatus, nonvolatile storage apparatus and data initialization method

A nonvolatile storage apparatus, comprising:

• a storage unit that stores data and an error correcting code corresponding to the data;
• a read unit that reads the data and the error correcting code corresponding to the data from the storage unit;
• and
• a control unit that controls initialization of the storage unit in response to receipt of an initialization instruction from a host system, the control unit comprising:
• a register unit that stores inversion bit information indicating
• locations of a plurality of bits to be inverted in data readout process, the plurality of bits to be inverted in data readout process being part of bits of at least one of read data that is read from the storage unit and an error correcting code corresponding to the read data, and
• an inversion unit that inverts part of bits of at least one of the read data or the error correcting code corresponding to the read data on the basis of the inversion bit information in the data readout process after the receipt of the initialization instruction.

A method for initializing data stored in a storage medium in response to receipt of an initialization instruction from a host system, the method comprising:

• receiving the initialization instruction from the host system;
• reading the data and an error correcting code corresponding to the data from the storage medium in data readout process;
• and
• inverting, by a control unit, part of bits of at least one of the read data and the error correcting code corresponding to the read data on the basis of inversion bit information in the data readout process after the receiving the initialization instruction, the inversion bit information indicating a plurality of bits to be inverted in the data readout process, the plurality of bits to be inverted in the data readout process being part of bits of at least one of the read data and the error correcting code corresponding to the read data.