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	STACKER NOTE                                       STACKER NOTE
	Title: CONVERTING UNMOUNTED DOUBLESPACE DISKS
	       (Applies to Stacker for Windows & DOS 3.1)
	STAC FAX 31602  (6/93)
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	BACKGROUND

	  Before installing Stacker, make sure all DoubleSpace drives 
	  on your computer are mounted.  Stacker automatically converts 
	  DoubleSpace drives if they are mounted.  Once you have 
	  installed Stacker, you won't be able to access data on any 
	  unmounted DoubleSpace drives unless you convert them to 
	  Stacker drives.

	  The following procedure assumes you've already installed 
	  Stacker. 

	SOLUTION

	  For this example, let's assume that Drive E is an unmounted 
	  DoubleSpace drive.  In the conversion procedure, you will 
	  check the drive for any pre-existing problems, run a program 
	  called DCONVERT to convert the drive, and then mount the new 
	  Stacker drive.

				   NOTE:                                                  

		Because it is not yet a Stacker drive, Drive 
		E does not appear in Stacker's drive map.

	  Check the drive for any pre-existing conditions

	    1.  If you are in Windows, please exit to DOS.  The 
		procedure works only under DOS.

	    2.  Check the drive for any pre-existing problems.  At the 
		DOS prompt, type:
	
		    CHKDSK E: <Enter>
	
		Let the DOS CHKDSK utility fix any problems it finds.

	  Check the drive for any pre-existing conditions

	    1.  Find the name of the compressed volume file by typing:

		    DIR E: /AH <Enter>

	    2.  Look for a filename such as DBLSPACE.000.  Note the 
		name to use in the next step.

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	Copyright 1993, Stac Electronics                    Page 1 of 3

    
    
    
    
    
    
    
    
    
    
    
	    3.  Type:
	
		    DCONVERT /C E:\DBLSPACE.000 <Enter>
	
		where DBLSPACE.000 is the unmounted drive to be 
		converted to a Stacker drive.


				     IMPORTANT!

		      DO NOT INTERRUPT THE CONVERSION PROCESS! 
		      If you do not let DCONVERT finish, you 
		      may lose data.

	  Mount the new Stacker drive

	    DCONVERT converts the drive into a Stacker drive.  The name 
	    of Stacker's "volume file" is STACVOL.DSK.  After you 
	    convert your drive, you must mount it again to gain access 
	    to your data.  You do this by editing a file called 
	    STACKER.INI.

	      1.  At the DOS prompt, type:
	
		      STACINI x: <Enter>
	
		  where "x" is the uncompressed boot drive.  The 
		  STACKER.INI file will be displayed.

	      2.  At the end of the file, type the following line:

		      E:\STACVOL.DSK,SW
	
		  The SW tells Stacker to swap the drive letters 
		  automatically so everything is where you expect it to 
		  be.

	      3.  Save the change and exit to DOS.

	      4.  Restart your computer.

		  Stacker mounts the newly converted drive plus any 
		  other mounted drives.

		    TAKE FULL ADVANTAGE OF STACKER'S SAFETY

	  Stacker Optimizer can recompress your data safely, giving you 
	  double the disk capacity without the DoubleSpace risks. 
  
  
  
  
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	Copyright 1993, Stac Electronics                    Page 2 of 3












	  To recompress your data with the Stacker Optimizer:

	    1.  At the DOS prompt, type:
	
		    STAC <Enter>

	    2.  Choose Stacker Optimizer.

	    3.  Select the drive you want to recompress.

	    4.  Choose Restack.
	
		Stacker recompresses the data on the selected drive.
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	Copyright 1993, Stac Electronics                    Page 3 of 3