Memory erasing method, memory controller, and memory storage apparatus

A memory controller for controlling a rewritable non-volatile memory module of a memory storage apparatus, wherein the rewritable non-volatile memory module has a plurality of physical blocks, the memory controller comprising:

• a host interface, configured to couple to a host system;
• a memory interface, configured to couple to the rewritable non-volatile memory module;
• a memory management circuit, coupled to the host interface and the memory interface, and configured to group the physical blocks into at least a data area and a spare area;
• wherein the memory management circuit establishes a link list according to the physical blocks of the spare area and stores the link list into the rewritable non-volatile memory module, wherein the physical blocks of the spare area are recorded in the link list according to an arrangement order,
• wherein during every power on of the memory storage apparatus, the memory management circuit selects a plurality of third physical blocks among the physical blocks of the spare area according to the link list and a predetermined number and respectively executes an erase command on the third physical blocks, wherein the third physical blocks are arranged at a beginning of the link list, and the number of the third physical blocks is the predetermined number.

A memory storage apparatus, comprising:

• a connector, configured to couple to a host system;
• a rewritable non-volatile memory module, having a plurality of physical blocks;
• and
• a memory controller, coupled to the rewritable non-volatile memory module, and configured to logically group the physical blocks into at least a data area and a spare area,
• wherein the memory controller establishes a link list according to the physical blocks in the spare area and stores the link list into the rewritable non-volatile memory module, wherein the physical blocks of the spare area are recorded in the link list according to an arrangement order,
• wherein during every power on of the memory storage apparatus, the memory controller selects a plurality of third physical blocks among the physical blocks in the spare area according to the link list and a predetermined number and respectively executes an erase command on the third physical blocks, wherein the third physical blocks are arranged at a beginning of the link list and the number of the third physical blocks is the predetermined number.