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2304.TXT
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___________________________________________________________________________
STACKER NOTE STACKER NOTE
Title: Stacker and MS-DOS DOS 6.0 (Applies to Stacker 2.x and 3.0)
STAC FAX Index #2304 - 04/02/93
___________________________________________________________________________
Background.
The information provided in this Stacker Note addresses issues related
to compatibility between Stacker and MS-DOS 6.0. Stacker 2.x and 3.0 are
completely compatible with MS-DOS versions 3.2 and above, including MS-DOS
6.0. The MS-DOS setup program will detect Stacker's presence and install
files to the appropriate drives. This eliminates the need for DOS
installation batch files such as STACDOS5.BAT to perform a DOS upgrade.
Microsoft includes a data compression product with MS-DOS 6.0. It is not
possible to run multiple data compression products simultaneously on a
single computer. DO NOT attempt to Stack a DoubleSpace ompressed drive
with Stacker 2.x or 3.0. The result could cause data loss. The MS-DOS 6.0
installation will not offer to use the DoubleSpace compression program on
your Stacked drive.
Installing MS-DOS 6.0 on a Stacker Drive.
The DOS 6.0 setup program is aware of data compression programs. To install
MS-DOS 6.0 on a Stacker drive, use the normal DOS SETUP command. The setup
program will detect your Stacker drive and following message will appear:
"Your computer uses a disk compression program.
Setup can install MS-DOS on your computer.
However, you will not be able to un-install
MS-DOS during or after setup. For more information
see 'Diagnosing and Solving Problems'."
Setup will recommend to continue with the installation process. Installing
the utilities that are offered during the setup process will not impact
your Stacked system. Setup will not offer to install DoubleSpace if it
detects another compression program on your system.
The DOS 6.0 system files will be properly transferred to the uncompressed
portion of the boot drive during installation. Any DOS device drivers that
are referenced in your CONFIG.SYS file will also be properly updated on
the uncompressed drive by the DOS setup program. It will be necessary to
manually update any DOS program that is located in the DOS directory on
the uncompressed drive, but is not referenced in your CONFIG.SYS file. For
example, to determine which drive is the uncompressed boot drive type
STACKER and press ENTER. The output will look similar to the following:
Stacker Disk Mount Utility - 3.00, (c) 1990-92 Stac Electronics,
Carlsbad, CA
Registered to: Stac Electronics
Stacker drive map:
Drive C: was drive D: at boot time [ D:\STACVOL.DSK = 80.30MB ]
Look for the drive that C was at boot time. In the example drive C was drive
D at boot time, so drive D is the uncompressed boot drive. Now that you have
identified the uncompressed boot drive, copy CHKDSK.EXE from the DOS
directory on your compressed Stacker drive to the DOS directory on the
uncompressed drive. Do the same with any other DOS file that did not get
updated on the uncompressed boot drive. It is recommended that you keep a
copy of COMMAND.COM in the DOS directory on the uncompressed drive.
Stacker's boot file synchronizer may update COMMAND.COM automatically for
you. If it does not, manually copy COMMAND.COM to the DOS directory on the
uncompressed boot drive.
Installing Stacker on an MS-DOS 6.0 System.
Stacker versions 2.x and 3.0 will install fine on any system that is
running MS-DOS 6.0. They are FULLY COMPATIBLE. However, it is important
that you DO NOT install Stacker on a drive that has been compressed with
the Microsoft DoubleSpace compression utility. Doing so could result in
data loss. If you wish to use Stacker and you have already compressed your
drives with DoubleSpace, follow the instructions in your MS-DOS 6.0 users
guide for removing DoubleSpace before installing Stacker.
As indicated in the Stacker Users Guide, disable any Anti Virus programs
before running the Stacker setup program. This includes the Anti Virus
program that is a part of MS-DOS 6.0.
__________________________________________________________________________
Copyright 1993, Stac Electronincs