Method and apparatus for distinguishing between diskettes in a diskette drive

摘要: A method and apparatus are disclosed for enabling a diskette drive system to distinguish between diskettes verify that the currently in is correct one. Each contains file allocation table controlling deallocation of storage space on diskette. time accessed, i.e., read or written, cyclic redundancy check (CRC) value calculated stored. When checking validity diskette, drive, CRC loaded compared most recently stored value. If does not match value, then this an indication wrong drive. warning provided user change before write operation will be commenced.