This can be done by clicking on the Apple Menu and then Restart. Restart the Mac OS 10.9 machine for the language change to take place.Choose the new language simply by clicking on it. After pressing Add, a prompt asking which language to use will populate your screen.Only the following languages are fully supported: Arabic, Chinese (Simplified), Chinese (Traditional), Czech, Danish, Dutch, English, Finnish, French, German, Hebrew, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazilian), Portuguese (European), Russian, Spanish, Swedish and Turkish. Pick the desired language from the populated list and click Add.Once in Language and Region, add a new language by clicking on the + icon.This can be found on the top row of the System Preferences window. Once in System Preferences, click on Language and Region.Click on the Apple Menu on the top left of the screen.If this initial option needs to be changed later on, it can be done so through the system preferences application. I tried to install multibeast but failed, so I installed the El Capitan Post Install tools. I´m able to boot but in the login page mouse and keyboard simple don´t work. On the initial start of Mac OS 10.9, the operating system will prompt for a default system language. Good afternoon I tried to install El Capitan last night on a macbook pro model A1211 (mid 2006) ATI radeon x1600 Intel Core 2 Duo.

El capitan on 2006 macbook pro