The followings are devices that are compatible with OS X El Capitan. For instance, you can't use AirDrop on your Mac if you don't have a WiFi network compatible with PAN. Most of the Mac models can install and run OS X El Capitan, but in some devices, you can't use full features of this OS due to hardware limitations.

You might have to free more space to run your Mac more smoothly because low space slows down system performance. However, that's the space you need to install El Capitan on your Mac. You can't install OS X El Capitan unless your Mac has a free space of 8.8 GB. However, if you are planning to update your Mac to OS X El Capitan, your device must fulfill the following requirements. Improved window management, quick and responsive interface, spotlight search, and enhanced graphics were the prerequisites of El Capitan OS. OS X El Capitan (10.11) was launched on 25 September 2015, and it is an improved version of OS X Yosemite (10.10). Is OS X El Capitan Still Available for Your Mac? Recover Lost Files After OS X El Capitan Update.Is OS X El Capitan Still Available for Your Mac?.How To Upgrade From Macos 10.11 To 10.The OS X 10.11 El Capitan upgrade is available only at the Mac App Store, which means if you have versions Snow Leopard 10.6.7, Mavericks, Yosemite, Lion, and Mountain Lion, the Mac App Store already exists on your computer. Mac OS 8.6 edit Released May 10, 1999, Mac OS 8.6 added support to the Mac OS nanokernel to handle preemptive tasks via the Multiprocessing Services 2.x and later developer API.

Mac OS 8.5.1, released December 7, 1998, was a minor update to Mac OS 8.5 that fixes several bugs that caused crashes and data corruption. Guide includes OS X 10.8.x to macOS 11.0.x. Easily check which versions of mac OS, iOS, iPadOS, or watchOS are compatible with your Mac model or iDevice. MacOS Big Sur supports most Mac models introduced in 2013 and later. Before installing this upgrade, make sure that your Mac is ready. If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

Update to mac os 10.11