To use the default boot image on the server, press and hold Option-N instead. Command-S: Start up in single-user mode. Disabled in macOS Mojave or later, or when using a firmware password. T: Start up in target disk mode. Command-V: Start up in verbose mode. If a key combination doesn't work at startup, one of these solutions might help: Press and hold all keys in the combination together, not one at a time. Shut down your Mac.
Then press the power button to turn on your Mac. Then press and hold the keys as your Mac starts up. For example, it might say that it's not compatible with this device or is too old to be opened on this version of macOS. To confirm compatibility before downloading, check the minimum hardware requirements:.
Time Machine makes it simple, and other backup methods are also available. Safari uses these links to find the old installers in the App Store. After you download the installer from the App Store, the installer opens automatically. Important: this release uses Xcode Note: the use of X11 including tcltk requires XQuartz. This release uses Xcode This file is only needed if you want to join the development of the GUI see also Mac-GUI repository , it is not intended for regular users.
Binaries for legacy OS X systems: R Below is the detailed instruction how to do it. Now the OS should start downloading automatically onto the external drive. After the download is complete, your Mac will prompt you to do a restart, but at this point, you should completely shut it down. Locate InstallESD. The same steps are valid for Mountain Lion and Mavericks. If your Mac runs macOS Sierra Instruction to downgrade from macOS Sierra.
Instruction to downgrade from macOS High Sierra. Instruction to downgrade from macOS Mojave. Instruction to downgrade from macOS Catalina. Before you do it, the best advice is to back your Mac up so your most important files stay intact. In addition to that, it makes sense to clean up your Mac from old system junk files and application leftovers.
The easiest way to do it is to run CleanMyMac X on your machine download it for free here. They should have image installations going back to OS Leopard and earlier. You can also ask their assistance to create a bootable USB drive with the installation file. So here you are. We hope this article has helped you to download an old version of Mac OS X.
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