DOCUMENT:Q40435 17-DEC-2000 [msdos] TITLE :SMARTDrive Does Not Support Conventional Memory PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:4.x,5.x,6.0,6.2,6.21,6.22 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MS-DOS operating system versions 4.0, 4.01, 5.0, 5.0a, 6.0, 6.2, 6.21, 6.22 ------------------------------------------------------------------------------- SUMMARY ======= SMARTDrive, the MS-DOS disk caching driver, supports the use of extended memory and expanded memory, but not conventional memory. SMARTDRV.SYS was designed as a disk caching program for environments with memory that MS-DOS does not use heavily: extended and expanded memory. The maximum 640K of conventional memory is so valuable that most people don't waste it with disk caching. Most people would rather use this precious conventional memory for running programs, and not for SMARTDrive to speed up their systems. However, if you do want to use SMARTDrive to speed up your system, there are two upgrade paths available, which are as follows: - Obtain an expanded memory board (or software to emulate an expanded memory board, such as the MS-DOS version 4.0 driver EMM386.SYS). -or- - Obtain an extended memory board. SMARTDrive can be used in the extended or expanded memory areas. MS-DOS original equipment manufacturers (OEMs) may choose to modify SMARTDrive to support conventional memory if they decide that the memory choices SMARTDrive was designed with are not adequate. Additional query words: 6.22 4.00 4.01 5.00 5.00a 6.00 6.20 ====================================================================== Keywords : Technology : kbMSDOSSearch kbMSDOS400 kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600 kbMSDOS500 kbMSDOS401 kbMSDOS500a Version : MS-DOS:4.x,5.x,6.0,6.2,6.21,6.22 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.