They are just provided to understand you that a remedy for data recovery problems is always there to help you retrieve the data and drives recovery. Most of the providers who deliver software for free will also have fixed span of period, after which the software will go off just like the hard drive break down. It is quite natural that before the actual hard drive data recovery process, the technical people will work out an evaluation procedures which is supposed to identify the problem and to decide if the lost data can be retrieved or not. Moreover in standard hard drive services, those who provide service will find out exactly the procedures that need to be carried out for the data recovery and the extend up to which the damage has affected the hard drive. Both these two divisions of recovery of hard drive are taken into consideration acknowledging that though file is lost, it is not gone permanently. One important thing to be careful, is some software which can even delete the data present in the hard drive permanently .You need to be on guard, the software that you deploy doesn't harm your hard drive and make the data loss and it should have a small disk impression. In order to successfully perform a hard drive recovery, everyone should follow the rules set for such application. The most significant principle in hard drive recovery is to avoid writing in the hard drive which is affected. Even, if you have erased a partition unknowingly, don't create another partition. Getting into these trouble, you may now realize that you need to take a back up for all your files and folders at least once in a week ,so as to be safe and secured but back up of data can only be done only to the media which is portable and platform independent and on the internetworking. If any network is not obtained, you can very well store that data on the portable media available and be assured about its safety. This AI can be compared with your script to the prior recovery of data sessions. This new version software will work with several file system like NTFS, FAT 16, FAT 32, FAT 12 etc and this recovery software can even find out the data that have gone from the Zip disk, Jaz Disks, digital camera, Rar disk etc apart from the hard drive of PC.