After installing Matlab successfully you find that some of the toolboxes are not available in the Start > Toolboxes list. The problem lies with incorrect paths. To fix this follow the steps below. - Execute the following command in Matlab \\ restoredefaultpath - Execute the command: \\ savepath * If that command fails it is because you don't have write permission to the install directory (for example /opt/MatlabR2009a/toolbox/local/). Run this instead: \\ savepath pathdef.m - Copy or move the file pathdef.m from your Matlab working directory to the install directory **/opt/MatlabR2009a/toolbox/local/**. - ​Now when you run the command ''ver'' all the correct toolboxes should be listed and they should be accessible from within Matlab.