Abstract :
In this article, the data recovery technology´s basic theory and relevant technical background knowledge are given, and on the basis of the understanding of documents recovery principles, using WinHex achieve the recovery of the mistakenly cut document under FAT32 file system. Data Recovery´s basic theories including: the basic concept of data recovery, the basic level, the basic classification, and the causes and symptoms of the loss of data. Also, the domestic and international data recovery technology states are analyzed and compared. Principle of disk storage and FAT file system are detailed carried out in the paper, focusing on the overall structure of the disk data storage, the main boot sector and the structure of directory under FAT32 file system. And on the basis of the principles and feasibility analysis of documents restoration under the Windows FAT32 file system, has used WinHex to realize the recovery of lost data manually. Has carried on the preliminary discussion to the data recovery programming, proposed the basic programming mentality of recovering the files deleted under the FAT file system, and after analyzed the possible difficulty and questions, has proposed the corresponding solution and the improvement.
