计算机硬盘空间大小对系统性能有很大影响，用户在使用一段时间后，硬盘可用空间会越来越少，原因主要有两个：一是用户的应用程序和文件越来越多，所需的硬盘空间越来越大；二是频繁进行文件创建、删除、拷贝和编辑后，会使文件存放不连续，夹带着许多空白区，即产生所谓的文 The size of the computer hard disk space has a great impact on system performance, users use a period of time, the available space for the hard disk will be less and less, mainly for two reasons: First, the user’s applications and files more and more Hard disk space is getting bigger and bigger; Second, frequent file creation, delete, copy and edit, will make the file storage is not continuous, with many blank area, that is, the so-called