do you have zcat installed? How much RAM is in your machine? On Thu, 17 Dec 2009, Hui J Yu wrote:

Dear freesurfer users,

I have recently downloaded freesurfer (virtualbox verion) and started testing using the sample data bert. I got the following error (I also tried on my data and the same error occured). Any suggestions?

********FINAL ITERATIVE TEMPLATE DEFORMATION******** Compute Local values csf/gray Fine Segmentation...46 iterations mghRead: encountered error executing: 'zcat /usr/local/freesurfer/subjects/bert/mri/T1.mgz',frame -1, errno 12

  mri_strip_skull: done peeling brain

Brain Size = 1793357 voxels, voxel volume = 1.000 mm3 = 1793357 mmm3 = 1793.357 cm3

mri_watershed Error: read failed

Linux freesurfer-virtual 2.6.28-17-generic #58-Ubuntu SMP Tue Dec 1 18:57:07 UTC 2009 i686 GNU/Linux

recon-all exited with ERRORS at Thu Dec 17 17:20:18 EST 2009 Thank you.

Hui Jing Yu