

======================================================================
  Microsoft(R) Product Support Services Application Note (Text File)
                  PD0748: OTHER COMMANDS AND PROGRAMS
                          QUESTIONS & ANSWERS
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                                                   Revision Date: 4/93
                                                      No Disk Included

The following information applies to Microsoft MS-DOS 6.0 Upgrade.

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| 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 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.                 |
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1.  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.

2.  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

          drive: setup /e
    
       where "drive" is your floppy disk drive.

       For more information on the Windows-based utilities, refer to
       the "Microsoft MS-DOS 6 User's Guide."

3.  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."

4.  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."

5.  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.

6.  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."

7.  Q. Why do I receive the message "Out of memory" when I use the
       Microsoft Defragmenter, Anti-Virus, and Undelete programs?

    A. The message "Out of memory" means that the program does not
       have access to enough conventional memory. You must optimize
       your system to free more memory. For information on this
       procedure, refer to the "Making More Memory Available" chapter
       in the "Microsoft MS-DOS 6 User's Guide."

8.  Q. I entered the command DELTREE *.* /y and all files on my
       current drive were deleted. Why did this happen?
    
    A. The DELTREE command allows you to delete entire directories--
       including all files and subdirectories--with one command. When
       you press ENTER, DELTREE prepares to delete all files and
       directories on the current drive. Before it does, it issues a
       message asking you to verify that you want to delete all the
       files and directories from the current drive. However, the /y
       parameter bypasses this verification message.
    
       For more information about the DELTREE command, refer to the
       "Microsoft MS-DOS 6 User's Guide," or type "help deltree"
       (without the quotation marks) at the MS-DOS command prompt.

