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Function 4408h          Does Device Use Removeable Media             DOS 3.0+

    Determines whether the specified device contains a removable
    storage medium, such as a floppy disk.

        Entry   AX = 4408h
                BL = Drive number (0 = default, 1 = A, etc.)

        Return  AX = 00h | 01h   Device is removable | fixed
                or
                AX = Error code, if CF is set
                     | 01h Invalid function
                     | 0Fh Invalid drive

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    This function returns an error value of 01h (invalid function) for
    a network drive or for a device that does not support the function
    request. In these cases, the calling program should assume that
    the storage medium is not removable.