Hello Rafa,

If you take a look under,

https://surfer.nmr.mgh.harvard.edu/pub/dist/freesurfer/5.3.0/

- you will see there is a Virtual Box .vdi file for the 5.3.0 release,

https://surfer.nmr.mgh.harvard.edu/pub/dist/freesurfer/5.3.0/freesurfer-Virtualbox-linux-x86-stable-pub-v5.3-full.vdi.gz

- but I think that Virtual Box image will be running CentOS6 (or some old version of CentOS). At that time we did not build or provide releases for Ubuntu linux. The version of CentOS in the VM and Ubuntu12 may use different versions of glibc so I’m not sure the packages with 5.3.0 binaries listed above will run on Ubuntu12.

We advertise the following caveat about switching to newer/different OS versions, or upgrading to a different (newer) Freesurfer release built with different compilers. Either of those changes will likely produce some difference in floating point math results.

Important Note: When processing a group of subjects for your study, it is essential to process all your subjects with the same version of FreeSurfer, on the same OS platform and vendor, and for safety, even the same version of the OS. While we continue to work to ensure that results match across platforms, there are none-the-less system-level libraries that are OS dependent. An exception to this rule is that you may view and edit files across any platform or version, and run some post-processing tools (outside the recon-all stream) if you check with us first (for instance you may run the longitudinal processing with newer versions).

But if it’s not an issue for you to run on an old version of CentOS instead of Ubuntu linux, then your best bet is to try and run the existing .vdi file listed above in the VirtualBox client - which you would need to download and install on your current Linux machine.

-R.

On May 30, 2024, at 12:34, Rafael Navarro <rafa.navarrogo@gmail.com> wrote:

External Email - Use Caution

Hello everyone,

I am working with a neuroimage model that uses the FreeSurfer 5.3 version as preprocessing (only autorecon-I). I have tried to install Freesurfer 5.3, but after reading previous messages in the mailing list It seems the license file format changed from FreeSurfer 5.3 to 6.0 due to an update of the Ubuntu libcrypt. Do you think that migrating the autorecon-I from v5.3 to v6.0 might affect the final results? Is there any alternative? Does a docker container running Ubuntu 12 with FreeSurfer 5.3 could work? Is still possible to get a license with the old format?

Regards!
Rafa Navarro
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