Version   Specifications
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2.1       Ships with Microsoft MS-DOS version 4.01.

           - Loads in CONFIG.SYS as SMARTDRV.SYS.
           - Provides read cache for BIOS-supported hard disks only.
           - Can use extended or expanded memory for cache.

3.0       Ships with Microsoft Windows versions 3.0 and 3.0a.

           - Same as SMARTDrive 2.1, plus:
           - Provides support for double-buffering.

3.13      Ships with Microsoft MS-DOS versions 5.0 and 5.0a.

           - Same as SMARTDrive 3.0, plus:
           - Provides added detection for logical partitioning.
           - Includes code tuning.

4.0       Ships with Microsoft Windows versions 3.1 and 3.11.

           - Same as SMARTDrive 3.13, plus:
           - Cache loads in AUTOEXEC.BAT as SMARTDRV.EXE and
             automatically attempts to load high.
           - Double-buffering support loads in CONFIG.SYS as:

                Device=<drive>\<path>\SMARTDRV.EXE /Double_Buffer

           - Read and write cache for all drives supported by the
             device driver interface, including floppy drives.

4.1       Ships with Microsoft MS-DOS version 6.0.

           - Same as SMARTDrive 4.0, plus:
           - Includes support for DoubleSpace drives.

4.2       Available through online services only.

           - Same as SMARTDrive 4.1, plus:
           - Includes support to clear the cache at an MS-DOS prompt.
           - Global write cache disabled by default.

5.0       Ships with Microsoft MS-DOS versions 6.20 and 6.21, and with
          Microsoft Windows for Workgroups version 3.11.

           - Same as SMARTDrive 4.2, plus:
           - Supports read-caching CD-ROM drives.
           - Supports the /u switch to not cache CD-ROM drives.

5.01      Ships with Microsoft MS-DOS version 6.22.

           - Same as SMARTDrive 5.0, plus:
           - Fixes problems with Kodak Photo CDs.
           - Includes support for DoubleSpace and DriveSpace drives.