If you want to buy a new computer or sell your old computer, normally we do backup on burning DVD’s or reinstalling software on new hard drive. You can make entire and exact backup hard drive using some programs. Hard drive cloning is a process makes your existing hard rive clone, it is an exact copy of your drive.
This method is useful for who want to upgrade their hard drive size or a new computer. The program copies all files and folder at the exact same locations. Just some drivers may vary because of the system hardware configuration changes when you buy a new computer. Simply install the required driver, it works like a charm.
Here is the list of Hard drive cloning programs.