|There are other programs but I doubt they will do what you want. The files are likely marked "unrecoverable" because they have been overwritten. Nothing can recover an overwritten file.|
Norton Ghost, or any such program, can clone a corrupt hard drive. But it will be an exact copy of the original, including all corrupted files.
This is yet another example of why you need a backup of all important files.Hard drives fail and data can be lost for a wide variety of other causes as well. In many such cases the files will not be recoverable. It is not a matter of if problems occur, but when.