This guide will take you step-by-step through the general procedure of how to migrate to Joomla 1.6.
Please read through all the material as this is not a light undertaking.
Short Background Information
Don’t let the numerical closeness of 1.5 and 1.6, mislead you. Joomla 1.6 took three years to develop and has been a major undertaking. Countless hours have been spent by many volunteers from around the world to put it all together. Although much of the code is the same from Joomla 1.5, much of it has been written from the ground up, and the changes are comparable to the changes from Joomla 1.0 to 1.5.
Because the changes from Joomla 1.5 to 1.6 are so large and because of the massive effort put into getting Joomla 1.6 to where it is today, there is no core upgrade path, this is indeed a migration. In planned future releases of Joomla (which will be…