Once downloaded, you’ll see Install OS X El Capitan sitting in LaunchPad, as well as in the /Applications folder. Once you’re sure that you have a fallback plan, let’s get started by downloading OS X El Capitan from the App Store. The third thing you should do is make sure you can swap back to the clone should you need to do so and that your data will remain functional on the backup. The second thing you should do is make sure you have a good backup. The first thing you should do is clone your system. In this article, we’ll look at upgrading a Mac from OS X 10.10 (Yosemite) to OS X 10.11 (El Capitan) to. Installing OS X has never been easier than in Yosemite. you’ve a secondary DNS service hosted by another OS X Server in your network and you do the updates sequentially.* Services are now built into the client operating system, albeit with less finely grained controls.you don’t use the DNS service built-in OS X Server (this means you use another internal DNS service or you OS X Server setup is wrong).This game with the DNS isn’t necessary in two cases: change again your network settings to get back to your regular settings.

run OS X Server and follow the assistant to finish the update.download the OS X Server update from the Mac App Store.after the system update, change your network settings to use a temporary external DNS server.update your base OS in 10.11.4 (and if you’re still on 10.10, you must do the big jump).This mean your update process must be this one: After the 10.11.4 update, OS X Server 5.0.15 won’t be able to start and your DNS service will be down. But if you use OS X Server you must certainly use the DNS service, so all your network - server included - should use only your internal DNS server. This mean you must update your system then your OS X Server. And in the same time, OS X Server 5.1 require El Capitan 10.11.4, it can’t be installed on a previous version. This may lead you to a network issue during the update process. Following yesterday’s announcements, OS X El Capitan 10.11.4 and OS X Server 5.1 are available on the Mac App Store and the update is highly recommended.īut, be careful, the two updates depend on each other.

Os x server app 10.11