You may have by chance deleted the data from a hard disk before saving them to a CD or another computer.
There is a possibility that you will be competent to retrieve a few or all of your data. You need to do the following in order to recover deleted data: Avoid saving any more data in the hard drive from which you want to recover data. If you will be recover your data on a later stage, then stop using the hard drive so that the data will be secure. If any more data are written or any new files are saved to your drive, you may perhaps mess up your chances of recovering data.
Loss of data may cause due to:
- Deleting data accidentally
- Data deleted by using shift + delete
- Software malfunctions
- Power surges
- Operating system crashes
- Human faults
- Virus attacks to the computer
Data may be deleted from hard drives, memory cards, hard disks,. Whatever may be the storage device data are recoverable even after deletion. All the storage devices save the information on it and it maintains a table to reach out that information. When you delete some information from it only the links are deleted but not the actual information, it still remains in the hard disk drive until it is over written, as that space is marked as free space which available for rewriting.
The simple delete command on most hard disks just marks in the file system that the space on a disk as being free for use. On condition that you did not save or write something new on the disk, previously deleted data should be reasonably easy to recover by means of a data recovery utility. You should even be proficient to recover data from an accidentally formatted disk drive. The more actively you use the drive the more difficult it becomes to get back that data. Since the lost files are badly overwritten by the newly saved files.
From the fact that the data are not erased from the hard disk, you should choose efficient hard drive data recovery software that can restore lost data and also allows you to preview the lost data even before recovery. This is a recommended feature because in case of images or pictures we say it is important to recover the files by having a glimpse of the picture that is to be recovered.