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      STACKER NOTE                                         STACKER NOTE
                  UNCOMPRESS FAILS WITH OPTIMIZER ERROR 101
                          (Applies to Stacker 4.0)
      STAC FAX  4605 (03-24-1994)
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      BACKGROUND
      
      UNCOMPRESS must run the Stacker Optimizer before uncompressing
      your drive. If you receive error 101 while optimizing, your
      system does not have enough memory to run the SDEFRAG utility.
      You must increase the conventional memory available on your
      system, and/or reduce SDEFRAG's memory requirements. These
      requirements will change based upon the cluster size your drive
      is using, and how full it is. Please note that SDEFRAG runs in
      conventional DOS memory (the first 640K), and does not make use
      of Extended or Expanded memory. The Optimizer's memory
      requirements are approximately as follows:
      
      Cluster Size (K)    Memory Required (K)      Stacker Drive Size
      ----------------  -----------------------   -------------------
          4                     503                      256MB
          8                     534                      512MB
          16                    560                       1GB
          32                    642                       2GB
      
      Where K=1024
      
      SOLUTION
      
         - Increase conventional memory available.
         - Reduce SDEFRAG's memory requirements.
         - Run UNCOMP immediately after Optimization.
           
      Increase conventional memory available
      
      There are two methods of increasing your conventional memory,
      automatic or manual. Third party memory managers such as QEMM,
      386MAX, NETROOM, or MS-DOS's MEMMAKER are examples of programs
      which will automate the memory management process. Running a
      program such as these often will increase available conventional
      memory to the point where the Optimizer will run successfully. If
      an automated memory manager is not available, or it does not
      provide sufficient conventional memory, you may try using a
      simple memory configuration by manually editing your CONFIG.SYS
      file. This procedure will require DOS 5 or above. Note that if
      you have DOS 6 or above, you may press the F8 key when you get
      the message "Starting MS-DOS." This will allow you to select
      which lines of the CONFIG.SYS to run.
       
       1.  From the STACKER directory DOS prompt, type ED /C <enter>
       2.  Remark out (make inactive) every line in your CONFIG.SYS by
           typing REM <space> at the beginning of each line, except for
           the following lines:
           DOS=HIGH,UMB
           DEVICE=C:\<DIR>\HIMEM.SYS
           DEVICE=C:\<DIR>\EMM386.EXE <NOEMS or RAM>
           Where <DIR> is DOS or WINDOWS
           (Note: For Dos 6 or greater use the DPMS and STACHIGH lines
           below)
           DEVICE=C:\STACKER\DPMS.EXE
           DEVICEHIGH=C:\STACKER\STACHIGH.SYS
           (Note: For other versions of DOS use the Stacker lines that
           will appear something like these)
           DEVICEHIGH=C:\STACKER\STACKER.COM
           DEVICE=C:\STACKER\SSWAP.COM (this line may not appear)
       4.  Save the file and restart the computer.
       5.  Run the Stacker Optimizer from the DOS prompt. Go to the
           STACKER directory and type: SDEFRAG drive: /H <enter> where
           drive: is the drive you wish to uncompress.
       6.  If SDEFRAG runs successfully, IMMEDIATELY run UNCOMP. Type:
           UNCOMP drive: <enter>.
           
      Reduce SDEFRAG's memory requirements
      
      If the procedures above still do not allow the Optimizer to run,
      you may lower its memory requirements. This is especially useful
      if you have compressed a large drive i.e. the Stacker drive is
      larger than 512MB. You may run SDEFRAG with a special option.
      This option affects speed, but allows it to run in less memory.
      From the DOS prompt, type:
      
            SDEFRAG /buffer=# /F /H <enter>
      where # is a value between 256 and 4096, inclusive. The following
      examples show how much memory is saved with various values:
      
               SDEFRAG /buffer=3072       21K memory saved
               SDEFRAG /buffer=2048       42K memory saved
               SDEFRAG /buffer=256        78.75K memory saved
      By default, SDEFRAG normally runs at /buffer=4096.
       
      Run UNCOMP immediately after Optimization
      
      IMMEDIATELY after successfully running the Optimizer, run UNCOMP.
      Do not restart your system, copy files to the disk, or do any
      other disk activity. From the DOS prompt type:
      
           UNCOMP drive: <enter>
      where drive: is the Stacker drive you wish to uncompress.
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      Copyright 1994 Stac Electronics