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      STACKER NOTE                                         STACKER NOTE
                ADDING HARD DRIVES & SOFTWARE TO YOUR SYSTEM
                          (Applies to Stacker 4.0)
      STAC FAX  4518 (07-12-1994)
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      BACKGROUND
      
      Adding a hard disk drive or software to a system with Stacker
      installed is the same as adding them to a non-Stacker system.
      This document discusses how DOS handles additional hardware and
      software, and how this relates to Stacker.
      
      SOLUTION
      
         - Adding a hard disk drive.
         - Device driven hard disk drives.
         - Adding software to your system.
           
      Adding a hard disk drive
      
      1.   If the new drive will not be installed as the boot drive.
      
      Add an additional hard disk drive to your system by following the
      hard drive manufacturer's instructions for installation. Most
      hard drives are recognized by DOS automatically. DOS assigns
      drive letters at system startup as needed. Hard drives have
      priority in drive letter assignment, so they get drive letters
      before Stacker. Therefore, the drive letter of your Stacker drive
      is moved down the alphabet by one letter for each hard
      drive/partition that is added.
      
      For example, if you have a single hard drive C that you
      compressed with Stacker, an additional drive letter D is assigned
      by DOS. The drives are swapped to keep your configuration
      consistent with the way it was before Stacker, i.e. drive C swaps
      with drive D. If you install a new hard disk, DOS assigns it
      drive letter D. DOS then assigns the Stacker drive the next
      available drive letter: E. Then drive C swaps with drive E. This
      reassignment is automatic.
      
      In order to ensure that your new hard disk is properly installed
      before formatting it, run DOS's FDISK program. Do not partition
      your drives at this point. Note whether you have an option to
      change fixed disk drives. If you do, display the new drive. If it
      is accessible, yet is 100% unused, the drive is available to
      partition and then format. If it is not, it may not be properly
      installed. See the manufacturer's documentation to finish the
      installation before proceeding with an FDISK partitioning or
      FORMAT procedure.
      
      2.   If the new drive will be installed as the boot (C) drive.
      
      If the new drive is installed as the boot drive, follow the
      manufacturer's instructions for installation. In order to ensure
      that your new hard disk is properly installed before formatting
      it, run DOS's FDISK program. Do not partition your drives at this
      point. Note whether you have an option to change fixed disk
      drives. If you do, display the new drive. If it is accessible,
      yet is 100% unused, the drive is available to partition and then
      format. If it is not, it may not be properly installed. See the
      manufacturer's documentation to finish the installation before
      proceeding with an FDISK partitioning, making the partition
      active, or FORMAT procedure. Install DOS to the new drive as you
      normally would.
      
      After you restart your system, you will not have access to your
      Stacker drives. Do the following to restore them:
      
       1.  Change to the new drive letter of the original drive. For
           example, if your original drive is now drive D, go to that
           drive.
       2.  Change to the STACKER directory and type CONFIG <enter>.
           Answer yes to the changes that the program wishes to make.
       3.  Type:
           REDBL c: <enter>
       4.  Restart your system to gain access to the Stacker drives.
           You may now compress your new hard drive if you wish.
       5.  If you get an error message after restart that the file 
           STACKER2.BIN is missing, copy it from the STACKER directory
           to the root directory of Drive C.
           
      Device driven hard disk drives
      
      Some hard disks such as "hard cards" require a device driver
      statement in the CONFIG.SYS file.  Which drive letter the new
      drive receives depends on whether it is loaded before or after
      the Stacker lines in the CONFIG.SYS.
      
      The syntax of the Stacker lines in your CONFIG.SYS depends on
      whether Stacker preloads. Examine your CONFIG.SYS file by typing
      ED /C <enter> at the DOS prompt. If the Stacker lines look like
      those below, Stacker is preloading:
      
           DEVICE=C:\STACKER\DPMS.EXE
           DEVICEHIGH=C:\STACKER\STACHIGH.SYS
      If the Stacker lines look like this, Stacker does not preload:
      
           DEVICE=C:\STACKER\STACKER.COM
           DEVICE=C:\STACKER\SSWAP.COM
      In either case, the drive will receive a letter before Stacker if
      its statement is before the Stacker lines; and it will receive a
      letter after Stacker if its statement is after the Stacker lines.
      You may move the statement to the other side of the Stacker lines
      if you wish to manage this configuration yourself. See StacFax
      4516 for information on preloading.
      
      If you have a CD-ROM drive that came in as a later drive letter,
      say E or F, you may have to manually change its assignment. See
      StacFax 4514 or your CD-ROM documentation for details.
      
      Adding software to your system
      
      Setup new software on your system just as you did before you
      installed Stacker. The installation procedures for the software
      will see your Stacker drive just like any other drive.
      
      There is some software, particularly upgrades to Operating
      Systems, that may need to install a few files to the uncompressed
      host drive as well as to the Stacker drive. If such an
      installation program reports that there is insufficient room on
      the uncompressed drive, you may increase the space available.
      Open the Stacker Toolbox in DOS or Windows. In Windows, click on
      the Configure button. In either Toolbox select Change Stacker
      Drive Size, then More Uncompressed Space Available. After the
      drive is defragmented, you will be asked how much space to make
      uncompressed. Choose a size a little larger than requested by the
      setup routine of the software you are installing. See Chapter 4
      of your Stacker User's Guide for detailed instructions on
      changing Stacker drive size.
      
      
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      Copyright 1994 Stac Electronics
