The invention is a method for updating system management BIOS data, for a user to store user data in the memory cell of a computer system according to the need, where the memory cell has a preset system management BIOS data; and the method provides an access block where a user can access user data for BIOS, after the BIOS is activated, judges if the access block has user data: if yes, storing the user data into the memory cell and removing the preset system management BIOS data; otherwise retaining it; the invention can update large numbers of data, reducing time and cost. |