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       STACKER NOTE                                         STACKER NOTE
                         DCONVERT SAFETY CHECK ERRORS
                  (Applies to Stacker  3.1 for Windows & DOS)
       STAC FAX 31605  (09/20/93)
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       BACKGROUND
       
       For added safety, Stacker lets you verify the integrity of your
       Dblspace drives before converting them.  If you get an error
       during the safety check, it means DCONVERT has found a problem
       which must be corrected before the drive can be converted.  This
       document shows you how to correct the most common safety check
       errors.
       
       SOLUTION
       
           Disable memory-resident programs that may interfere with
           DCONVERT
           Find and delete corrupted files
            
       Disable memory-resident programs that may interfere with DCONVERT
       
       Some memory-resident programs may lock files on a drive.
       Stacker's safety check returns an error when it cannot open such
       a file.  An example of this is an Anti-Virus program locking it's
       own definition file so nothing will tamper with it.
       
        1. Bypass your startup files to temporarily disable memory-
           resident programs.  To do this, restart your computer.  When
           MS-DOS displays the following text:
           
             Starting MS-DOS ...
       
           press and release the F5 key, or press and hold down the
           SHIFT key.  Your computer will start without memory-resident
           programs.
        2. If you encountered the error during initial Stacker setup,
            run setup again.  If you encountered the error while running
            DCONVERT on an unmounted or removable drive, run the
            DCONVERT program again.
            
       Find and delete corrupted files
       
       One or more files may have been corrupted by Dblspace itself.
       One way to find all such files is to "NUL copy" all the files on
       the Dblspace drive.  "NUL copy" forces DOS to go through all the
       motions of copying a file without actually writing anything to
       your hard drive.  To find files corrupted files, do the
       following:
       
        1. If a printer is available, print the directory structure of
           the Dblspace drive.  At a DOS prompt, type:
       
             DIR C:\  /S  >PRN
       
           where D is the Dblspace drive letter.
       
        2. Copy the contents of every directory on your disk to NUL.
           For example, to copy the DOS directory on drive D to NUL,
           type:
       
             COPY D:\DOS\*.*  NUL
       
           Repeat this command for every directory on your Dblspace
           drive.
       
        3. "NUL copy" stops on files that cannot be copied and prompts
           "Abort, Retry, Ignore, Fail?"  Take note of the file name,
           then press F to resume copying.
       
        4. Delete the corrupted files.
       
        5. 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.
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       Copyright 1993, Stac Electronics