Hi Raymundo,
The Linux Server has 128 GB. But yes, the file is too large and maybe that is why it is crashing. So, I did a workaround by using a shorter segment and computing cortex sources and then project it to default subject. I computed TF with required parameters. However, When I click the TF to view results on cortex/MRI - I am getting the following error.
Error while viewing Time Frequency Plot on MRI - Discussions - Brainstorm (usc.edu)
Thanks