rc (ULONG) - returns
This function returns the same codes as DosDevIOCtl:
ERROR_BAD_DRIVER_LEVEL
ERROR_GEN_FAILURE
ERROR_INVALID_CATEGORY
ERROR_INVALID_DRIVE
ERROR_INVALID_FUNCTION
ERROR_INVALID_HANDLE
ERROR_INVALID_PARAMETER
ERROR_MONITORS_NOT_SUPPORTED
ERROR_PROTECTION_VIOLATION
ERROR_UNCERTAIN_MEDIA
NO_ERROR