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1991-04-29
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ID:ST Optimizing with STACKER
Quarterdeck Technical Note #194
by Vernon Balbert
Q: Why won't OPTIMIZE.COM work with STACKER?
A: In addition to this technote, you should read your STACKER manual for
more information on QEMM and STACKER as well as the README.DOC file in your
STACKER subdirectory.
STACKER does work with optimize, but STACKER adds a device driver to
the end of your CONFIG.SYS called SSWAP.COM. The line typically reads like
this:
DEVICE=C:\STACKER\SSWAP.COM C: D:
SSWAP.COM is a non-resident program that switches the drive letters.
In the example above, drive C: becomes drive D: and drive D: becomes drive
C:. This makes it easy if you installed STACKER on a drive that already
had programs so you don't have to re-write your batch files and reconfigure
your software to run from a different drive. See your STACKER manual for
information on the use of SSWAP.COM.
When running Optimize, this device line needs to be either remarked or
removed from the CONFIG.SYS. Also, your AUTOEXEC.BAT probably contains
references to drive C:. All these references need to be changed to drive
D:. Conversely, all references to drive D: should be changed to drive C:.
This is necessary since Optimize requires that the CONFIG.SYS and the
AUTOEXEC.BAT reside on drive C:.
The next step is to create a QEMM sub-directory on the uncompressed
drive. This is typically drive D: when the SSWAP.COM device driver is
loaded in your CONFIG.SYS. The following files need to be in the QEMM
sub-directory in order to run Optimize properly: QEMM386.SYS (or QEMM.SYS
if you are running QEMM 50/60, or QEMM-386 version 5.0, or QRAM.SYS),
OPTIMIZE.COM, LOADHI.SYS, LOADHI.COM, LOGOPT.COM, BUFFERS.COM (if you are
using DOS 2.x or 3.x), RSTRCFG.SYS, MCA.ADL (if you are running on a
Microchannel machine), and WINHIRAM.VXD if you are planning on running
Windows 3.0 in enhanced mode.
Once you have done this, you should reboot before running Optimize so
that the drives are set up correctly. Now you should be able to run
Optimize normally. After Optimize has run, you should edit your CONFIG.SYS
and restore the SSWAP.COM line. Also, you should edit your AUTOEXEC.BAT to
restore the drive specifications to what they were before; e.g. change all
references to drive D: to drive C: and all references to drive C: to drive
D:. Reboot again. You are now getting the most out of your conventional
memory.
Copyright (C) 1991 by Quarterdeck Office Systems
* * * E N D O F F I L E * * *