With the current version of the Media Manager and Partition Management APIs, any non-zero return value is a fatal error for that function. Also, the MM_FAILURE return value returned by each of these APIs is a generic code which indicates that, for some reason, the function failed to perform the desired operation.
In future versions of NetWare, the Media Manager APIs will provide more detailed fault isolation information through the use of additional return values. This will assist the application developer in providing more fault-tolerant applications.