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       STACKER NOTE                                         STACKER NOTE
                              DCONVERT ERROR #23
                  (Applies to Stacker 3.1 for Windows & DOS)
       STAC FAX 31604  (08/93)
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       BACKGROUND
       
       Converting a DoubleSpace drive to a Stacker drive involves
       adjusting the number of File Allocation Table (FAT) entries.  If
       a file is positioned at the end of the FAT, the DCONVERT program
       fails on error #23 and instructs you to run DEFRAG.  DEFRAG
       consolidates the free space at the end of the FAT and moves any
       obstructing file(s) out of the way.  If  DCONVERT still fails on
       error #23 after running DEFRAG, then it is probably due to an
       unmovable file at the end of the FAT.  The most common type of
       unmovable files are those with read-only, hidden, and/or system
       attributes.
       
       SOLUTION
       
       To correct this error:
       
           Determine which files have special attributes.
           Disable utilities that maintain special-attribute files.
           Remove file attributes.
           Run DEFRAG.
           Run DCONVERT (or SETUP).
           Enable utilities and replace file attributes.
            
       First, locate files with special attributes
       
       If you have a printer, you can list the necessary files by
       following procedure 1-1.  Otherwise, follow manual procedure 1-2.
       
       1-1.(Route to printer.)  From the root of the DoubleSpace
           drive, type:
               
               dir /as /s >prn <ENTER>
           
           to locate system files.  Repeat the command for hidden and
           read-only files:
               
               dir /ah /s >prn <ENTER>
               dir /ar /s >prn <ENTER>
       
       1-2.(Manual procedure.)  From the root of the DoubleSpace
           drive, type:
       
               dir /as /s <ENTER>
           
           to locate system files.  Make a list of the filenames,
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           repeating the process for hidden and read-only files:
       
               dir /ah /s <ENTER>
               dir /ar /s <ENTER>
        
        2. You now have three lists.  Note that some files appear on
           more than one list.  Certain files must retain their
           attributes.  They are IO.SYS, MSDOS.SYS, DBLSPACE.BIN, and
           DBLSPACE.INI.  You must remove the attributes from all other
           files on your lists.
            
       Disable utilities and remove file attributes
       
        1. Some utilities create and maintain files with special
           attributes.  If you remove the attributes from such a file
           while the utility is active, the utility will probably
           replace the attributes before you can complete this
           procedure.  For example, the file IMAGE.IDX normally has
           read-only, hidden, and system attributes, and indicates that
           the Norton IMAGE utility is active.  Before proceeding,
           disable such utilities according to the vendor's recommended
           procedure.
       
        2. Remove the attributes from each file on your lists.  For
           example, the file C:\IMAGE.IDX might appear on all three
           lists.  The following command, typed at the root of the
           DoubleSpace drive, removes all three attributes:
       
               attrib -r -h -s c:\image.idx <ENTER>
       
           Repeat this command for each file on your lists.  Keep these
           lists.  You will need them to complete the last procedure in
           this document.
            
       Run DEFRAG
       
       Run DEFRAG.  It will now be able to move any obstructing file(s)
       from the end of the FAT.
       
       Run DCONVERT (or SETUP)
       
       If you encountered this error during initial Stacker setup, run
       setup again.  If you encountered this error while running
       DCONVERT on an unmounted or removable drive, run the DCONVERT
       program again.
       
       Enable utilities and replace file attributes
       
       After converting successfully, enable any utilities disabled
       earlier following the vendor's recommended procedure.  Then
       replace the file attributes removed earlier.  Refer to your lists
       of system, hidden, and read-only filenames for this procedure.
       
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        1. Determine the attributes that need to be replaced for each
           file.  For example, the file C:\IMAGE.IDX might appear on
           all three lists.  The following command, typed at the root
           of the Stacker drive, replaces all three attributes:
       
               attrib +s +h +r c:\image.idx <ENTER>
       
           Note that +s replaces the system attribute, +h replaces the
           hidden attribute, and +r replaces the read-only attribute.
           As another example, the file C:\COMMAND.COM may appear on
           the read-only list only.  The following command, typed at
           the root of the Stacker drive, replaces the read-only
           attribute:
       
               attrib +r c:\command.com <ENTER>
       
        2. Repeat step 1 for each file on your lists.




































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       Copyright 1993, Stac Electronics                      Page 3 of 3