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If on the Mac you use the *.pkg file  (or on linux the *.rpm) installers, then different versions of freesurfer will be installed automatically under a directory with the appropriate version number, e.g., on the Mac /Applications/freesurfer/{7.0.0, 7.1.0, 7.1.1, …} and similarly on linux under /usr/local/freesurfer/{version}.

If you have an older 5.X or 6.X version of freesurfer  installed “generically” as /Applications/freesurfer (or /usr/local/freesurfer on linux) then I recommend moving it to live under a child subdirectory with a version number as Andrew listed below.  This will allow the installers to maintain different versions of freesurfer for forthcoming releases.

- R.

On May 25, 2021, at 22:29, Boa Sorte Silva, Narlon <narlon.silva@ubc.ca> wrote:

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Thanks for the quick reply Andrew!

Nárlon Cássio

Nárlon Cássio Boa Sorte Silva PhD (He, Him, His)
CIHR and MSFHR/PARF Postdoctoral Research Fellow
Aging, Mobility, and Cognitive Health Lab
Djavad Mowafaghian Centre for Brain Health
Department of Physical Therapy, Faculty of Medicine
University of British Columbia
Vancouver, Canada
Twitter: @BoaNarlon

On May 25, 2021, at 5:04 PM, Hoopes, Andrew <AHOOPES@mgh.harvard.edu> wrote:

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Hi Nárlon,
 
There’s no harm in installing multiple versions of freesurfer on one filesystem. The FS distribution is confined to the directory it’s installed to, so we suggest organizing a FREESURFER_HOME directory structure like:
 
/Applications/freesurfer/5.3
/Applications/freesurfer/6..0
/Applications/freesurfer/7.1.1
 
etc… when installing different distributions. Just make to correctly source the directories when using different versions.
 
Best,
Andrew
 

From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Boa Sorte Silva, Narlon <narlon.silva@ubc.ca>
Date: Tuesday, May 25, 2021 at 6:17 PM
To: freesurfer@nmr.mgh.harvard.edu <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] Multiple Versions Installed

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Dear FreeSurfer experts, 
 
I was wondering if there are any problems in having installed two different versions of FreeSurfer on the same MacOS computer?
 
We have 5.3 installed and wanted to install 7.1.1, but keep the older version in case older data processed in the 5.3 needed to be reanalyzed.
 
Would we run into any problems by installing the new version and processing new data with it?
 
Thanks,
Nárlon Cássio

Nárlon Cássio Boa Sorte Silva PhD (He, Him, His)
CIHR and MSFHR/PARF Postdoctoral Research Fellow
Aging, Mobility, and Cognitive Health Lab
Djavad Mowafaghian Centre for Brain Health
Department of Physical Therapy, Faculty of Medicine
University of British Columbia
Vancouver, Canada
Twitter: @BoaNarlon
 
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