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       STACKER NOTE                                         STACKER NOTE
                 CONFIGURING A CD-ROM ON A SYSTEM WITH STACKER
                    (Applies to Stacker 1.x, 2.x, and 3.0)
       STAC FAX 2506  (08/93)
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       BACKGROUND
       
       During system startup, Stacker drives are assigned a drive letter
       by DOS as they are "mounted" by the Stacker device driver in
       Config.sys.  CD-ROM drives are not assigned a drive letter until
       MSCDEX.exe loads in the Autoexec.bat file.  Because Stacker drive
       letters are assigned first, the CD-ROM will have to take the next
       available letter.  This means that if your CD-ROM existed before
       Stacker, you will probably have to reconfigure it to use a new
       drive letter.
       
       CONFIGURING THE CD-ROM.
       
        1. CONFIG.SYS -  Here is a sample Config.sys.  It is
           recommended that the CD-ROM device be loaded after SSWAP.COM
           as shown.
       
                    DEVICE=C:\DOS\SETVER.EXE  (this is required if
               running under DOS 5.0)
                    DEVICE=C:\STACKER\STACKER.COM  C:\STACVOL.DSK
               .....etc.
                    DEVICE=C:\STACKER\SSWAP.COM C:\STACVOL.DSK /SYNC
                    DEVICE=SONYCDU.SYS or DEVICE=PCD650S.SYS   [/D:name
               /B:xxx  /M:mode]
        
        2.  AUTOEXEC.BAT - The CD-ROM letter is assigned here with
            the /L: parameter on the MSCDEX  command line.  Take note of
            the Stacker drive letter  assignments at boot time.  For
            example, to determine which drive letters Stacker has been
            given, type:
       
                  C:\STACKER\STACKER      <ENTER>
       
            The output will look similar to:
       
               STACKER - 2.00, (c) 1990-91, Stac Electronics, Carlsbad,
               CA
               Drive C: was drive D: at boot time   [ D:\STACVOL.DSK ]
               Drive D: was drive C: at boot time
       
            Set the CD-ROM to the next available drive letter. In this
            example, drive E: is available for the CD-ROM.  In
            Autoexec.bat you would assign drive E: on the MSCDEX command
            line,
       
               MSCDEX /D:name /M:x /V /L:letter /E
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       Copyright 1993, Stac Electronics                      Page 1 of 2











       
            Change /L:Letter to /L:E
       
               MSCDEX /D:name /M:x /V  /L:E  /E
       
            After changing the CD-ROM drive letter, it may be necessary
            to re-setup applications or programs to recognize the new
	    drive letter designation.	













































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       Copyright 1993, Stac Electronics                      Page 2 of 2