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PD0746.TXT
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======================================================================
Microsoft(R) Product Support Services Application Note (Text File)
PD0746: MEMMAKER QUESTIONS AND ANSWERS
======================================================================
Revision Date: 5/93
No Disk
The following information applies to Microsoft MS-DOS(R), version 6.0
Upgrade.
1. Q. How can I free conventional memory on my computer?
A. You can optimize your computer memory use automatically by
running the MS-DOS 6.0 MemMaker program. There are some
restrictions on using MemMaker to optimize your system memory.
MemMaker works on 80386 and 80486 computer systems only; it
does not work on 80286 or 8088 systems. It works with the MS-
DOS HIMEM.SYS and EMM386.EXE memory-management utilities only;
it does not work with third-party utilities, such as Qemm(TM)
and 386MAX(R).
MemMaker reviews your CONFIG.SYS and AUTOEXEC.BAT files and
then optimizes them by loading terminate-and-stay-resident
(TSR) programs and installable device drivers into the memory
area between 640 kilobytes (K) and 1 megabyte (MB)--which is
called the upper memory area (UMA). Before you run MemMaker,
verify that all device drivers are being loaded properly and
that any hardware they control is also functioning correctly.
To run MemMaker, type "memmaker" (without the quotation marks)
at the MS-DOS command prompt, and press ENTER.
Read each screen and follow the instructions listed. During
this process you are prompted to choose either Express Setup or
Custom Setup. We recommend using the express mode of MemMaker
Setup initially. Setup prompts you to verify that your
applications require expanded memory. If you are unsure, refer
to your software documentation.
MemMaker reboots your machine twice while it determines the
optimal configuration. When it has chosen a configuration, a
screen reports how much memory was available before you ran
MemMaker and how much is available now. If the displayed memory
is not what you expect or need, press the ESC key to undo
changes made by MemMaker.
If you accepted the changes made by MemMaker and now want to
undo them, type "memmaker /undo" (without the quotation marks)
at the MS-DOS command prompt, and then press ENTER.
For more information about MemMaker, please refer to the
"Managing Your System" chapter of the "Microsoft MS-DOS 6
User's Guide."
2. Q. After MemMaker rebooted my computer, the computer stopped
responding ("hung"). How can I correct this problem?
A. MemMaker tries to use UMA locations that it determines are
free. If your machine hangs, note any error messages that are
displayed, then restart your computer. MemMaker detects that
your computer is being restarted before the optimization is
complete and displays a screen listing possible reasons for the
interruption and instructions for resuming or quitting the
optimization. Accept the default options to continue.
For more information regarding MemMaker, please refer to the
"Making More Memory Available" chapter of the "Microsoft MS-DOS
6 User's Guide."
3. Q. I am using the Multi-config commands and I want to optimize my
system. Are there any special precautions I should take?
A. MemMaker views the CONFIG.SYS and AUTOEXEC.BAT files as a
single unit. When you run MemMaker, it removes all references
to memory managers and the FILES, BUFFERS, and DOS commands. It
then adds the following commands to the top of the CONFIG.SYS
file:
device=c:\dos\himem.sys
device=c:\dos\emm386.exe <settings>
buffers=<setting>
files=<setting>
dos=umb
lastdrive=<setting>
fcbs=<setting>
NOTE: The setting values for BUFFERS, FILES, LASTDRIVE, and
EMM386.EXE are determined by MemMaker based on your
configuration.
Because of this design, MemMaker cannot optimize CONFIG.SYS and
AUTOEXEC.BAT files that use Multi-config commands.
To optimize multiple configurations using MemMaker, you must
have separate configuration files for each item on your
multiple configuration menu, and run MemMaker on each set of
files. This is a complex process. Refer to the "Making More
Memory Available" chapter of the "Microsoft MS-DOS 6 User's
Guide" for instructions about using MemMaker with multiple
configurations.
For more information on the multiple configuration commands,
refer to the "Configuring Your System" chapter of the
"Microsoft MS-DOS 6 User's Guide."
For more information on MemMaker, refer to the "Making More
Memory Available" chapter of the "Microsoft MS-DOS 6 User's
Guide."
4. Q. I have a SCSI hard disk drive. When I try to run MemMaker, the
program hangs. How can I correct this problem?
A. This problem may occur if a device driver loads into upper
memory before the SMARTDrive double_buffer driver.
To work around this problem, use the following steps:
1. Restart your computer (if you haven't already done so).
2. When MemMaker prompts you for input, choose Cancel And Undo
Changes.
3. Open your CONFIG.SYS file in MS-DOS Editor and add the
following line to the beginning of the file:
device=c:\dos\smartdrv.exe /double_buffer
NOTE: If this line already appears in your CONFIG.SYS file,
make sure it is the first line.
4. Save your CONFIG.SYS file.
5. Try running MemMaker again.
If the above procedure does not correct the problem, refer to
the "Making More Memory Available" chapter of the "Microsoft MS-
DOS 6 User's Guide" for information about troubleshooting
problems with MemMaker.
5. Q. MemMaker does not complete its process. What could be causing
this problem?
A. Your system may be calling a batch file or menu program from
your AUTOEXEC.BAT file that is preventing MemMaker from
finishing.
To work around this problem, use the following steps:
1. Open your AUTOEXEC.BAT file in MS-DOS Editor and use the REM
command to remark out any batch files or menu programs.
2. Save your modified AUTOEXEC.BAT file and then quit MS-DOS
Editor.
3. Run MemMaker again.
NOTE: If you receive the MemMaker error message "Invalid
Session ID," delete all MEMMAKER.STS files from drive C,
remove any MemMaker commands from the CONFIG.SYS and
AUTOEXEC.BAT files, and then run MemMaker again. You can
search for all MEMMAKER.STS files by typing "dir
c:\memmaker.sts /s" (without the quotation marks) at the MS-
DOS command prompt and pressing ENTER.
r's
Guide."