当你删除一个文件，其实数据还是在原来的地方，还占着空间，另外的文件可能会覆盖这个“尸体”，这个软件会把它恢复，甚至你已经清空回收站了。
When you delete a file, its content physically remains intact on the media, but the occupied space becomes marked as free. Next file saved to the disk may overwrite the contents of the deleted file. It is very important to make sure that no application writes to the drive or partition where deleted file is located since every new file (even a small one) may overwrite the deleted file. NTFS Undelete is free software that allows you to recover deleted files. It recovers files directly from hard drive, and it will work even if you empty Recycle Bin.
