DOCUMENT:Q103914 10-OCT-1999 [win95x] TITLE :Err Msg with Adaptec 1542c: Cannot Write to Drive C: PRODUCT :Microsoft Windows 95.x Retail Product PROD/VER:WINDOWS:3.1,3.11 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows versions 3.1, 3.11 - Microsoft Windows for Workgroups versions 3.1, 3.11 ------------------------------------------------------------------------------- SYMPTOMS ======== When you run Windows or Windows for Workgroups and use an Adaptec 1542c bus-mastering SCSI hard disk controller, you may receive the following error message: Cannot write to drive C: CAUSE ===== The Adaptec 1542c controller does not need a device driver to function correctly in most circumstances. However, on some hardware, it cannot perform necessary functions (such as double buffering for direct memory access) without a device driver. WORKAROUND ========== According to Adaptec Technical Support, a possible workaround is to use ASPI4DOS.SYS, which is normally used only with the 1542b SCSI controller. Load this driver in the CONFIG.SYS file as follows: DEVICE=C:\DOS\ASPI4DOS.SYS This line assists the controller in performing its functions. MORE INFORMATION ================ You can obtain ASPI4DOS.SYS from the Adaptec bulletin board service or Adaptec Technical Support. The Adaptec 1542c Controller is manufactured by Adaptec, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability. Additional query words: 3.10 3.1 3.11 ASPI4.DOS ====================================================================== Keywords : Technology : kbAudDeveloper kbWin3xSearch kbWFWSearch kbZNotKeyword3 kbWin310 kbWin311 kbWFW310 kbWFW311 Version : WINDOWS:3.1,3.11 ============================================================================= 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 1999.