Any Hazards When Installing V3 and V4 in Parallel?
- To: mathgroup at smc.vnet.net
- Subject: [mg19146] Any Hazards When Installing V3 and V4 in Parallel?
- From: hanssen at zeiss.de
- Date: Thu, 5 Aug 1999 23:58:48 -0400
- Sender: owner-wri-mathgroup at wolfram.com
reviewing this newsgroup I noticed, that there may be problems when
installing Mathematica 3.x and Mathematica 4 in parallel on one WinNT Sp3 - computer.
Since there are also reportson rare cases, where Mathematica 3.x-notebooks
don't run on Mathematica 4 exactly as before, I need a way to easily "switch
back" for some transitional period of time.
Is there a way to install Mathematica 4 in parallel to an existing Mathematica 3.0?
Which boundary conditions have to be met, when doing this?
Mathematica produces Registry entries under HKEY_LOCAL_MACHINE/
SOFTWARE/Wolfram Research/Mathematica. Looking into it,
I see a subdirectory "3.0". If Mathematica 4-installation is done right,
I expect a seperate entry "4.0" after upgrading. However, there
are other registry entriesHKEY_CLASSES_ROOT/.nb/MathematicaNB/
ShellNew, which is not related to a version. The same holds for
similarly structured entries MathematicaM, MathematicaNB and
MathematicaTR, all under HKEY_CLASSES_ROOT. The same
holds for Mathematica-related entries under HKEY_LOCAL_MACHINE/
SOFTWARE/Classses. I have found some more registry entries
in other places. Therefore my question: Does one have to expect
problems with the registry for a parallel installation of both versions?
Do Mathematica 3.x and Mathematica 4 install any files in WinNT/System or
WinNT/System32, whose names are the same, but the content
different? Any problems to expect in this area?
If there are any problems of Mathematica 3.x and Mathematica 4 installed on the
same computer which can not be overcome by using proper
options when installing:
Would it be sufficient, to move the Mathematica 3.x-directory under
Program Files together with all its subdirectories to a CDR before
installing Mathematica 4, in order to copy it back to its old place, when needed?
Would it be possible, to move the Mathematica 4-directory under
Program Files together with all its subdirectories to a CDR, if one
wants to switch back to Mathematica 3.x, when needed?
Does anyone have a batch file for switching between versions
in such a way?
Dipl.-Math. Adalbert Hanszen
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