AST RESEARCH, INC. TECHNICAL BULLETIN # 1513 12/04/96 TITLE: Windows 95 and IDE Controller ISSUE After rebooting the system following the completion of a Windows 95 installation, the operating system will not recognize a device installed on the secondary IDE controller. This issue applies to the following systems: 501951, 501952, 501954, 501955, 501956, 501972, 503043, 503057, 503058, 503079, 503080, 503081-037, 503082, 503083, 503084, 503086, 503087, 503116, 503118, and 503152, 503153-037, and 503116-137. BACKGROUND The file MSHDC.INF disables the secondary IDE port. Data regarding the 82371SB controller on the system board was not included in this version of the MSHDC.INF file. This file is included with Windows 95 version 400.950. This issue applies ONLY to retail versions of Windows 95. To verify the version of Windows 95, double-click on the System icon in the Control Panel, and view the General dialog box. Altering the CMOS Setup parameters for the IDE ports has no effect on this issue. ACTION Obtain a new version of MSHDC.INF by downloading file IDEINFUP.EXE from the Intel World Wide Web site at address: ftp://ftp.intel.com/pub/patch/ Look for the file at the bottom of the Intel Web page. IDEINFUP.EXE is a self-extracting file. Copy it to a temporary, empty directory on the hard drive and execute the file. Once the files have been extracted, execute the SW.EXE file and follow the directions. The process executed at this point will automatically replace the MSHDC.INF file for the user. NOTES Obtain further information regarding this issue by downloading the IDEINFUP.TXT file located at the address above. TAN APR 3536SW --------------------------------------------------------------------- The information in this data sheet is subject to change without notice. AST Research, Inc. shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or consequential damages resulting from the furnishing, performance, or use of this material. This material contains information protected by copyright. No part of this material may be reproduced in any form without prior written consent from AST Research, Inc. All rights reserved. --------------------------------------------------------------------- 01