HFS+文件系统的解析与数据恢复  

Analysis and Recovery on HFS+ file System

作　　者：王玉敬[1] 张京生[1] 

机构地区：[1]北京信息科技大学数据恢复研究所,北京100101

出　　处：《计算机安全》2013年第9期57-60,共4页Network & Computer Security

摘　　要：针对由硬件因素造成硬盘中数据丢失的情况,提出一种HFS+文件系统下数据恢复的实现方法。该方法能够在硬盘出现坏道的情况下,恢复宗卷中的数据,恢复效率和准确性较高,对于数据恢复领域的发展具有积极意义。介绍了HFS+文件系统的宗卷结构,深入剖析了HFS+文件系统的卷头结构、元数据文件以及节点结构。通过研究遍历B-树的过程,详细阐述了数据恢复的具体实现。The data on the hard disk is lost because of hardware factors. In order to solve this problem, a method of data recovery on HFS＋ file. system having bad sectors. In the case of HFS＋ file system damaged, this method can restore the data in the volume, having a higher recovery efficiency and accuracy, conducive to developments in the field of data recovery. The volume structure of HFSt file system is introduced, especially, the volume header, metafile and node structure are analyzed. By the research to traverse the B tree structure of HFS＋ file system, the concrete implement of data recovery is elaborated.

关 键 词：HFS+ 文件系统 卷头 元数据文件 节点 

分 类 号：TP309.3[自动化与计算机技术—计算机系统结构]