读取MBR,EBR,FAT表,FDT的数据并且演示 对学习OS的朋友有点作用 需要在纯DOS下运行才有效-LOAD DATA OF THE MBR,EBR,FAT,FDT BY HARD DISK,AND SHOW THE DATA BY ASIIC,IT WORKS FOR SOME BODY WHO WANT TO STUDIO OS,YOU SHOULD RUN IT IN DOS SYSTEM,NOT WINDOWS