For any type of storage device to be functional, there must be some method for the computer to know which bits stored on it relate to the specific files.
Ka ụdị nchekwa nchekwa ọ bụla rụọ arụ ọrụ, ọ ga-abụrịrị ụzọ ụfọdụ maka kọmputa ịmara nke bitsị echekwara na ọ na-emetụta faịlụ ndị ahụ.