文件的删除与恢复

Smart Data Recovery

Smart Data Recovery is a free data recovery tool for Windows operating system that supports the FAT and NTFS file systems. The software easily recovers data from hard disks, digital cameras, and any type of storage media – flash drives, USB drives, memory stick, PC card, multimedia card, secure digital card and diskette.

Smart Data Recovery can recover any deleted files, including MS Office files, photos, mp3 and zip files, even if the partition table is lost!
下载地址：http://www.smartpctools.com/data_recovery/download.html

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Sure Delete

Sure Delete is our multiple award-winning solution for wiping and removing bits of data left over on your hard drives from deleted files. If you think that when you delete a file, all the data that was in it is unrecoverable, think again.
下载地址：http://www.wizard-industries.com/sdel.zip

这是两款免费的软件，第一个是用来恢复被删除的文件，但是如果是用第二个软件删除的文件是没有办法恢复的。第二个软件还提供了美国国防部用的文件删除方式。