There is a simple three step process for creating surface models. The steps assume that you are in the afni subdirectory of the subject for which a surface is to be created.
Step 1: Prepare the FreeSurfer directory tree
Step 2: Reconstruct the surface. Note that the name of the anatomy is not needed, but if you are using the up arrow in the UNIX shell to recall the last command and edit it, there is no need to delete the filename.
Step 3: Finish the surface
For more details, see the following web pages: