# Increase Pentaho Server memory limit for custom installations on Windows or Linux

If you used a custom method to install PDI on your Windows or Linux machine, you can increase memory limits by editing the Tomcat or JBoss startup script as described in the article [Configure and start the Pentaho Server after manual installation](https://docs.pentaho.com/install/9.3-install/pentaho-installation-overview-cp/manual-installation/manual-installation-process/prepare-jboss-connections-and-web-app-servers/prepare-jboss-web-application-servers/step-5-configure-pentaho-settings-for-jboss/add-jboss-logging/configure-and-start-the-pentaho-server-after-manual-installation). If you used the Pentaho Installation Wizard to install PDI, then refer to the previous sections of this article.

Make sure to also [increase the Spoon memory limit](https://docs.pentaho.com/install/9.3-install/pentaho-configuration/tasks-to-be-performed-by-a-pentaho-administrator/configure-the-design-tools-and-utilities/pdi-design-tools-and-utilities/increase-the-pdi-client-memory-limit/modify-the-pdi-client-startup-script).