1. A memory configuring method for a memory storage apparatus, wherein the memory storage apparatus has a rewritable non-volatile memory module and the rewritable non-volatile memory module has a plurality of physical blocks, the memory configuring method comprising: recording pattern information corresponding to a plurality of various operating systems in an initial session table; receiving a plurality of handshaking query commands from a host system; identifying a pattern corresponding to the handshaking query commands and recognizing a type of an operating system of the host system according to the pattern corresponding to the handshaking query commands and the pattern information recorded in the initial session table; and configuring the rewritable non-volatile memory module according to the type of the operating system and announcing a configuration of the memory storage apparatus to the host system.