      -----------------------------------------------------------------
      STACKER NOTE                                         STACKER NOTE
              RESTART DURING STACKER OPTIMIZER, WRITE PROTECTED
                          (Applies to Stacker 4.0)
      STAC FAX  4704 (03-17-1994)
      -----------------------------------------------------------------
                                      
                                      
      BACKGROUND
      
      When Stacker mounts a Stacker drive it verifies the STACVOL file
      containing the compressed data.  If the Stacker Optimizer
      (SDEFRAG) was interrupted during the "Optimizing files..." stage
      of optimization, Stacker pauses the normal startup of your
      computer with a message like this:
      
        E: = C:STACVOL.DSK Restart during Stacker Optimizer detected
        (Write protected)
        Press any key to continue...
      
      SOLUTION
      
       1.  Change to the STACKER directory on the uncompressed drive
	   and type:
            SDEFRAG drive: <Enter>
           where drive is the Stacker drive that is write protected.
       2.  When the Disk Optimization screen is displayed, choose
           Optimize Drive Now, and follow the instructions on the
           screen. The Optimizer will repair and restart your system.
       3.  Run CHECK /F on the Stacker drive before running the Stacker
           Optimizer again.
           
      UNABLE TO REPAIR FATS, #139     /     UNABLE TO REPAIR FATS, #86
      
      If SDEFRAG is not able to repair the Stacker drive, you'll get
      one of these messages.  It means that both copies of the File
      Allocation Table (FAT) have been corrupted.  Some data is already
      lost, but this procedure will save the remaining data on your
      disk.
      
       1.  Change to the STACKER directory on the uncompressed drive
           and type:
            CHECK /=A /F  <Enter>
	   where drive is the Stacker drive that is write protected.
       2.  When CHECK offers to repair the drive, let it.
       3.  When CHECK offers to delete damaged files, respond NO.
       4.  Restart you computer and run CHECK /F again.  Let it delete
           any files still reported as damaged.  Then use your most
           recent backup to restore missing files.
           
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      Copyright 1994 Stac Electronics
