SMARTDRV [/X] [[drive[+|-]]...] [/U] [/C | /R] [/F | /N] [/L] [/V | /Q | /S]
         [InitCacheSize [WinCacheSize]] [/E:ElementSize] [/B:BufferSize]

/X              Disables write-behind caching for all drives.
drive           Sets caching options on specific drive(s). The specified
                drive(s) will have write-caching disabled unless you add +.
+               Enables write-behind caching for the specified drive.
-               Disables all caching for the specified drive.
/U              Do not load CD-ROM caching module.
/C              Writes all information currently in write-cache to hard disk.
/R              Clears the cache and restarts SMARTDrive.
/F              Writes cached data before command prompt returns (default).
/N              Doesn't write cached data before command prompt returns.
/L              Prevents SMARTDrive from loading itself into upper memory.
/V              Displays SMARTDrive status messages when loading.
/Q              Does not display status information.
/S              Displays additional information about SMARTDrive's status.
InitCacheSize   Specifies XMS memory (KB) for the cache.
WinCacheSize    Specifies XMS memory (KB) for the cache with Windows.
/E:ElementSize  Specifies how many bytes of information to move at one time.
/B:BufferSize   Specifies the size of the read-ahead buffer.