Format the disk or RAW file problem - Solve flash drive or MMC card problem

Sometimes when we insert our pen-drive or mmc card a dialog comes says format the disk and we cant able to open that drive or if this dialog comes,

simple way to solve this is to perform chkdsk command on the drive

- open cmd
-now type in cmd --->  chkdsk e: /r

 

here e: is your disk drive no.

if still error comes that "type of file system is raw ,chkdsk is not available for raw drive

than download zar recovery from here --> ZAR Recovery