This page is a work in progress...
Overview
This page describes how to upgrade from LinuxCNC 2.5.x to LinuxCNC 2.6.x. There is no one-step upgrade from EMC 2.4 or earlier to LinuxCNC 2.6. To perform such an upgrade, follow the instructions to upgrade to 2.5 first. (
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?UpdatingTo2.5) and then follow the steps on this page.
Getting LinuxCNC 2.6
Upgrading Ubuntu 10.04 (Lucid) from LinuxCNC 2.5 to 2.6
Fresh install on Ubuntu 12.04 (Precise)
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNC_On_Ubuntu_Precise
Fresh install on Debian 7 (Wheezy)
Changes to your configuration
HAL pin names for the hostmot2 daughter boards 7i64 and 8i20 have changed names. If you use these daughterboards you will need to update your HAL configuration.