Do not close the lid or power off your Mac until installation is complete.
Download & Install OS X Yosemite 10.10.4 Update. The complete release notes for OS X 10.10.4 are included below. In the App Store, on the left side of the window, select Updates. Additionally, OS X 10.10.4 includes updates and bug fixes for Photos app and iCloud Photo Library, and several other smaller changes as well.In the menu bar, click the Apple icon to open the Apple menu.Do not close the lid or power off your Mac until installation is complete.Īfter you've gone through the preparation steps, you need to download and install the latest version of macOS. During installation, your Mac may restart, or display a blank screen short time.When this process is complete, an installer application named Install OS X El Capitan is placed in your Applications folder.Follow the on-screen instructions to perform a compatibility check, and prepare for installation.In the archive, double-click InstallMacOSX.pkg.Double-click the downloaded archive, InstallMacOSX.dmg, to view its contents.
The file size is 5.8 GB, so the download may take a while, depending on the speed of your Internet connection. Open the terminal application on your macOS (Applications > Utilities > Terminal) Check for macOS update using the softwareupdate -l Note down.
If your Mac is running OS X Lion or Mountain Lion, follow these steps to upgrade to El Capitan. Upgrade Instructions for Mac OS X 10.10 10.9 to 10.10. Now available at the Mac App Store for free, Mac OS X 10.10 Yosemite was first announced at the Worldwide Developers Conference in June, and is the second update to be named after a place in Apple. If your Mac is running Mavericks or newer, you can proceed to upgrade to Catalina. * If your Mac is running OS X Lion or Mountain Lion, you must upgrade to El Capitan before you can upgrade to Catalina. The following versions of OS X and macOS can be upgraded to macOS Catalina.
If anything goes wrong, you can restore your Mac to its previous state. For example, if you have OS X 10.9.5 and OS X Server 3.2.2, you can upgrade or migrate to OS X 10.10.5 and OS X Server 5.0.15. Then you can update or migrate to the final versions of OS and macOS Server that you want to install. Back up your dataĪlthough not required, we strongly recommend you back up your Mac before proceeding with an upgrade. If you can't upgrade or migrate your OS and macOS Server to versions that you want, upgrade to interim versions. However, you can still try to upgrade to El Capitan. For whatever reason, this iMac wont accept MacOS High Sierra, even though this shows up as freely available under Software Update.
Open that app from your Applications folder to begin installing the operating system.If your Mac is not on this list, you cannot upgrade to Catalina. How to upgrade from Mac OS x 10.9.5 to 10.10 (required for a new invoicing programme). Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. The Steps for Upgrading to Mac OS X El 10.11 Capitan Visit the Mac App Store.
macOS Big Sur can upgrade Catalina, Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks.After you download the installer from the App Store, the installer opens automatically. Safari uses these links to find the old installers in the App Store.