This paper introduces the working principle of the recycle bin in Windows,expounds the algorithm of saving the deleted files and the special control file info2,and gives the methods and steps of recovering the files in the recycle bin in DOS.

• 介绍了Windows中回收站的工作原理,阐述了保存被删除文件的算法和其特殊控制文件Info2,给出了在Dos下恢复回收站中文件的方法与步骤。