How To Fix Disk Drive Recognized as Unformated or Raw Disk

It becomes so frustrating when you plug a USB drive or an External Hard Disk then suddenly windows prompts you it cant access you hard disk and it needs to be formatted .
Its not fun at all when you think of your data such videos , documents , pictures etc are about to be gone forever ..
A very common error when trying to access the drive is the message asking you to format the disk .
and when you try to check the Properties of the file it shows both free and used spaces are 0 bytes .

                                                           Do not Format 
                                          and Do not Panic 

Such errors often rise due to either of the following reasons :

-- Unsafe Removal of a Drive
-- Suddenly Power Lost when the disk was in Use .

Method : 

U can Use the ChkDisk utility to restore your drive to an early state without having to use any software

Do the Following :

--  Plug the Drive then make a note of the drive letter
--  Run Command Prompt as an Administrator

       Click Start -> Type CMD on the search box , right click cmd and select run as administrator

--  On Commad Prompt window type the following

           chkdsk X: /f  

             Note : X is reffered as an example of the drive letter . replace it with your drive letter 

-- Wait for windows to detect and fix errors on your drive
     Close the CMD window and check your drive :

These often works with USB drives and Hard Disk drives that have gone on such errors