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1992-11-05
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___________________________________________________________________________
STAC FAX STAC FAX
Title: Configuring a CD-ROM on a Stacked System
STACKER NOTE TEC036 - 6/18/92 STAC FAX Index #2507
___________________________________________________________________________
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
re-configure it to use a new drive letter.
Configuring the CD-ROM.
1. CONFIG.SYS
Here are 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
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.
___________________________________________________________________________
Copyright 1992, Stac Electronics STAC FAX (619) 431-6712