====================================================================== Microsoft(R) Product Support Services Application Note (Text File) PD0748: BACKUP AND MISCELLANEOUS QUESTIONS AND ANSWERS ====================================================================== Revision Date: 5/93 No Disk The following information applies to Microsoft MS-DOS(R), version 6.0 Upgrade. --------------------------------------------------------------------- | INFORMATION PROVIDED IN THIS DOCUMENT AND ANY SOFTWARE THAT MAY | | ACCOMPANY THIS DOCUMENT (collectively referred to as an Application | | Note) IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER | | EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED | | WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR | | PURPOSE. The user assumes the entire risk as to the accuracy and | | the use of this Application Note. This Application Note may be | | copied and distributed subject to the following conditions: 1) All | | text must be copied without modification and all pages must be | | included; 2) If software is included, all files on the disk(s) | | must be copied without modification (the MS-DOS(R) utility | | diskcopy is appropriate for this purpose); 3) All components of | | this Application Note must be distributed together; and 4) This | | Application Note may not be distributed for profit. | | | | | | Copyright (C) 1993 Microsoft Corporation. All Rights Reserved. | | Microsoft and MS-DOS are registered trademarks and Windows is a | | trademark of Microsoft Corporation. | | 386MAX is a registered trademark of Qualitas, Inc. | | Qemm is a trademark of Quarterdeck Office Systems. | --------------------------------------------------------------------- 1. Q. My computer failed the Microsoft Backup compatibility test. What is causing this problem and how can I correct it? A. One or more of the following conditions may cause your computer to fail the Microsoft Backup compatibility test: - The floppy disk drive controller card does not support direct memory access (DMA). - A software or hardware compatibility problem exists. - You are using a third-party virtual device driver in Windows. - The floppy disk is not properly positioned in the drive. - Your floppy disks are defective. - You are loading APPEND.EXE. - You are loading POWER.EXE. If you are running the MS-DOS-based version of Microsoft Backup, after you turn on the computer and the text "Starting MS-DOS..." appears, press the F5 key to perform a "Clean Start," then run the compatibility test again. If APPEND.EXE and/or POWER.EXE are interfering with Microsoft Backup, use the REM command to remark out these programs and then restart your computer before you perform a backup. If you are running Microsoft Backup for Windows, use the following steps to troubleshoot this problem: 1. Run File Manager and format a floppy disk to see if you are having problems formatting floppy disks in Windows. If you cannot format disks in Windows, use the MS-DOS-based version of Microsoft Backup. 2. Run Windows in standard mode (WIN /S) and then run the compatibility test. If the compatibility test works in standard mode but does not work in 386 enhanced mode, remove any virtual device drivers that may conflict with VFINTD.386. Tape backup virtual device drivers, for example, may conflict with VFINTD.386. The following virtual device drivers, which are loaded in the [386enh] section of the SYSTEM.INI file, can cause the compatibility test to fail: MYABU.386 FASTBACK.386 VFD.386 CPBVXD.386 VIRWT.386 CMSTAPE.386 CMSTAPED.386 CMSDTAPE.386 ABACKUP.386 For more information, order the article titled "Your Computer Fails the Microsoft Backup Compatibility Test" from the Technical Library. 2. Q. When I try to use Microsoft Backup for MS-DOS, I receive the message "DMA Buffer Size Too Small." How can I correct this problem? A. You can correct this problem by increasing the size of the direct memory access (DMA) buffer used by EMM386.EXE. To do this, use the following steps: 1. Use an ASCII text editor, such as MS-DOS Editor, to open your CONFIG.SYS file. 2. Locate the EMM386.EXE command line. 3. At the end of the EMM386.EXE command line, add the following parameter: /d:64 4. Save the CONFIG.SYS file, then quit the text editor. 5. Restart your computer. For more information about Microsoft Backup for MS-DOS, refer to the "Managing Your System" chapter in the "Microsoft MS-DOS 6 User's Guide". 3. Q. When I try to use Microsoft Backup for Windows, I receive the message: "DMA Buffer Size Too Small." How can I correct this problem? A. You can correct this problem by increasing the size of the DMA buffer used by the extended memory manager and then modifying your system initialization file (SYSTEM.INI). To do this, use the following steps: 1. Use an ASCII text editor, such as MS-DOS Editor, to open your CONFIG.SYS file. 2. Locate the EMM386.EXE command line. 3. At the end of the EMM386.EXE command line, add the following parameter: /d:64 4. Save the CONFIG.SYS file, then quit the text editor. 5. Use an ASCII text editor to open your SYSTEM.INI file, which is located in your Windows directory. 6. Locate the [386Enh] section and add the following line after the section heading: DMABuffersize=64 7. Save the changes to the SYSTEM.INI file, then quit the text editor. 8. Quit Windows if you haven't already done so, and restart your computer. For more information about Microsoft Backup for Windows, please refer to the "Managing Your System" chapter in the "Microsoft MS-DOS 6 User's Guide". 4. Q. How can I find more information on the new MS-DOS 6.0 commands? A. You can find information on all MS-DOS commands by typing "help" (without the quotation marks) at the MS-DOS command prompt. If you want information on a specific command, type "help" (without the quotation marks) followed by the command name to go directly to that section in the MS-DOS Help program. 5. Q. How do I add the Windows-based utilities after I install MS-DOS 6.0? A. The MS-DOS 6 Upgrade includes Windows-based versions of Microsoft Backup, Microsoft Anti-Virus, and Microsoft Undelete. To install these programs after you have installed MS-DOS 6.0, insert Setup Disk 1 in your floppy disk drive. At the MS-DOS command prompt, type the following command and press ENTER : setup /e where is your floppy disk drive. For more information on the Windows-based utilities, refer to the "Microsoft MS-DOS 6 User's Guide". 6. Q. Now that I have upgraded to MS-DOS 6.0, my CD-ROM drive no longer works correctly. Why is this occurring and how can I correct the problem? A. If MS-DOS 6 Upgrade Setup finds the Microsoft Compact Disc Extensions (MSCDEX) in your AUTOEXEC.BAT file, it updates MSCDEX.EXE to version 2.22. This version may be incompatible with your CD-ROM drive's device driver. If you did not experience incompatibility problems with your earlier version of MS-DOS, you can avoid problems by replacing the new version of MSCDEX with your previous version. If you do so, you must also add the following command to your CONFIG.SYS file and then reboot your computer: device=c:\dos\setver.exe This problem may also be caused by a memory conflict involving MSCDEX. If you load MSCDEX into the upper memory area (UMA) and encounter CD-ROM problems, try loading it into conventional memory. Contact the manufacturer of your CD-ROM drive to determine whether your drive's device driver is compatible with MSCDEX version 2.22. 7. Q. Can I load MSCDEX version 2.22 into the UMA? A. You can use the LOADHIGH command to load MSCDEX version 2.22 into the UMA, but only on an 80386 or 80486 machine with available extended memory and an upper memory block (UMB) provider [such as EMM386.EXE, Qemm(TM), or 386MAX(R)]. If LOADHIGH fails to load the program into the UMA, use the MemMaker program to optimize your system. MemMaker may be able to find additional UMBs or rearrange the order in which programs are loaded so that MSCDEX can load into the UMA. For more information on optimizing your system and using MemMaker, refer to the "Making More Memory Available" chapter in the "Microsoft MS-DOS 6 User's Guide". 8. Q. Why do I receive the message "Out of memory" when I use the Microsoft Defragmenter, Microsoft Anti-Virus, or Microsoft Undelete? A. The message "Out of memory" means that the program cannot access enough conventional memory. You must optimize your system to make more memory available. For information on this procedure, refer to the "Making More Memory Available" chapter in the "Microsoft MS-DOS 6 User's Guide".