• HasExtendedDiskInit flag tells if file system has extended Disk Initialization calls (DIXFormat, DIXZero, DIReformat).

• FSSupports2TBVols flag tells if file system supports 2 terabyte volumes.

• FSSupports4GBVols flag tells if file system supports 4 gigabyte volumes.

• FSMDoesDynamicLoad flag tells if file system manager supports dynamic loading.

• HasFileSystemManager flag tells if the File System Manager is available (see ‘fsm ’ selector).

• HasFSSpecCalls flag tells if FSSpec calls (new specifications to identify a file) are available.

• FullExtFSDispatching flag tells if the new dispatcher HFSDispatch is available (extended functions).