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STACKER NOTE                                                   STACKER NOTE
Title: Recovery From a Failed Stacker Installation on an IBM PS/1
STAC FAX Index #2003 - 2/20/92                          
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NOTE:  If Stacker has not yet been installed, see Tec020: Installing
       Stacker on an IBM PS/1.

Background.  

   The PS/1 is a ROM-based machine.  It normally boots from its 
   "Built-In-DOS" on the ROM D: drive and  reads Config.sys and Autoexec.bat 
   from there as well.  The PS/1 can be reconfigured, using"CUSTOMIZE", to 
   read Config.sys and Autoexec.bat from C: so that the Stacker device 
   drivers may be loaded.  If the boot process is not modified using the 
   "CUSTOMIZE" program before loading Stacker, the data may appear to be 
   "missing" because the STACKER.COM device driver has not been loaded.

   A "4 Quadrant" system menu is normally loaded from ROM upon boot. It 
   consists of: 
   
   1. Information 
   2. Microsoft Works 
   3. Your Software 
   4. IBM DOS  
   
   You can shell to a DOS prompt by pressing <shift F9>. The "4 Quadrant Menu" 
   is installed in Config.sys: "INSTALL=D:\SHELLSTB.COM".

   "CUSTOMIZE How System Starts" is a program normally in the C:\DOS 
   directory, but is copied into the Stacker drive upon "STACKING... the 
   existing drive".  The program also should be on the DOS diskettes that 
   came with the machine.  In the Customize program, you can configure the 
   computer to read the system files, Config.sys, and Autoexec.bat  from C: 
   or D:

   Note: THE CUSTOMIZE DEFAULTS CAN BE RESTORED BY POWERING DOWN THE SYSTEM, 
         HOLDING DOWN THE 2 MOUSE BUTTONS, AND POWERING BACK UP.

Recovery.

   Note:  You MUST have the DOS program diskette containing CUSTOMIZ.EXE
          or a bootable floppy disk to proceed.  Nothing further can be done 
          until you have one of these!

If you have the DOS program diskette.

1. Insert the DOS diskette in A: and Run the CUSTOMIZE program from the
   Dos Quadrant.  (You can also press <shift> F9 to get to a prompt and run 
   A:CUSTOMIZ.)


If you do not have the DOS diskette but have a bootable system diskette.

1. Insert the system diskette in A: and from the system menu press
   Alt+SysRq to force the system to boot from A: (the D: Rom drive 
   will not be accessible after this.)

2. Copy config.sys to A: and reboot

3. From the DOS directory on the Stacker drive (C:), run CUSTOMIZ.

Running CUSTOMIZE:

1. The third line from the bottom of the screen says "Read Config.sys:". 
   Click on "from Disk"

2. The next line down says " Read Autoexec.bat". Click on "From Disk"

3. The last line says "Disk to Read from". Click on C:

4. Press <ENTER> to save changes and exit.

5. Reboot the machine.

6. This will bring you to a C: prompt.  Edit the Config.sys on C:\ and
   add the line: Install=D:\SHELLSTB.COM to restore the system Quadrant menu.

7. Restart the system for changes to take affect.

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Copyright 1993, Stac Electronics