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      STACKER NOTE                                         STACKER NOTE
                    SIZE MISMATCH, EXISTING INSTALLATION
                    (Applies to all versions of Stacker)
      STAC FAX  31704 (12-03-1993)
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      BACKGROUND
      
      When Stacker mounts a Stacker drive it verifies the STACVOL file
      containing the compressed data.  If the size of the STACVOL file 
      is incorrect, Stacker pauses the normal startup of your computer 
      with this message until the problem is corrected:
      
          E: = C:STACVOL.DSK (Size mismatch)  (Write protected)
          Press any key to continue...
           
      Stacker protects every STACVOL file by setting READ-ONLY, HIDDEN, 
      and SYSTEM attributes.  However, if a corrupt or unstable program 
      violates DOS's conventions by truncating the STACVOL file, a size-
      mismatch will result.
      
      SOLUTION
      
          Obtain REPAIR.EXE
          Determine the uncompressed drive letter
          Unmount the Stacker drive
          Run a disk repair utility or CHKDSK /F on the uncompressed drive 
          Run REPAIR
           
      Obtain REPAIR.EXE
      
      If you have Stacker 3.1 for Windows and DOS, you already have
      REPAIR.EXE.  Otherwise, you can download it from the Stac BBS and 
      copy it to a floppy disk.
      
      Determine the uncompressed drive letter
      
      The uncompressed drive contains the STACVOL file which must be
      repaired.  To locate the file, from a DOS prompt, type STACKER and 
      press <Enter>.  Take note of the write-protected drive letter and 
      STACVOL file in square brackets (E:\STACVOL.DSK in this example):
      
              Drive C: was drive E: at boot time [E:\STACVOL.DSK - 
                              Write protected]
      
      IMPORTANT:  To avoid data loss, do not copy any files to the 
      uncompressed drive.
      
      Unmount the Stacker drive
      
      To unmount the Stacker drive, type STACKER -d and press <Enter>, 
      where d is the Stacker drive letter (C in this example).
      
      Run a disk repair utility or CHKDSK /F on the uncompressed drive
      
       1. When repairing the uncompressed drive (E in this example), 
          the utility will prompt you to save lost chains as files.  
          Respond no.
       
       2. If the utility lists the STACVOL file as being cross-linked 
          with other files, you must delete the other files and then 
          run the disk disk repair utility again.
           
      Run REPAIR
      
       1. If you are using Stacker 3.1, insert Disk 1 (labeled for 
          MS-DOS 6) into drive A (or B) and change to that drive.  
          Type CD TECH to access the directory containing REPAIR.EXE.
      
       2. If you downloaded REPAIR.EXE and copied it to a disk, 
          insert that disk into drive A (or B) and change to that 
          drive.
      
       3. The command syntax for REPAIR is
      
                   REPAIR /=U d:\STACVOL.XXX
          
          where d:\STACVOL.XXX is the uncompressed drive letter and 
          STACVOL file you determined in a previous step.  For example,
                   
                   REPAIR /=U E:\STACVOL.DSK <Enter>
       
       4. You will see messages like:
      
                Repairing host FAT...
                Host FAT successfully repaired.
                Please restart your computer so that the changes may
                take effect
          
          Remove any floppy disks and restart your computer to access 
          the repaired Stacker drive.
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      Copyright 1993 Stac Electronics