Digital forensics investigation is restricted to retrieve data merely from the computer

Laws dealing with digital evidence are concerned with two issues only: integrity and authenticity.

Digital evidence is information stored or transmitted in binary form that may be relied on in court

Data recovery is a process of salvaging inaccessible, lost, corrupted, damaged or formatted data from secondary storage, removable media or files, when the data stored in them cannot be accessed in a usual way

Digital forensics is a branch of forensic science encompassing the recovery, investigation, examination and analysis of material found in digital devices, often in relation to computer crime.