Method for performing system backup in a memory device, associated memory device and controller thereof, and associated electronic device

A memory device, comprising:

• a non-volatile (NV) memory, arranged to store information, wherein the NV memory comprises at least one NV memory element;
• and
• a controller, coupled to the NV memory, arranged to control operations of the memory device, wherein the controller comprises:
• a processing circuit, arranged to control the controller according to a plurality of host commands from a host device, to allow the host device to access the NV memory through the controller, wherein:
• the controller writes system information of the memory device at a plurality of locations within the NV memory to make the system information be stored at a first location and a second location within the plurality of locations, respectively, wherein the system information is internal control information of the memory device, and the system information stored at the second location is equivalent to the system information stored at the first location;
• and
• when the system information stored at the first location is not available, the controller reads the system information stored at the second location to control the memory device to operate according to the system information read from the second location.

A controller of a memory device, the memory device comprising the controller and a non-volatile (NV) memory, the NV memory comprising at least one NV memory element, the controller comprising:

• a processing circuit, arranged to control the controller according to a plurality of host commands from a host device, to allow the host device to access the NV memory through the controller, wherein:
• the controller writes system information of the memory device at a plurality of locations within the NV memory to make the system information be stored at a first location and a second location within the plurality of locations, respectively, wherein the system information is internal control information of the memory device, and the system information stored at the second location is equivalent to the system information stored at the first location;
• and
• when the system information stored at the first location is not available, the controller reads the system information stored at the second location to control the memory device to operate according to the system information read from the second location.