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How-To Geek is where you turn when you want experts to explain technology. Since we launched in , our articles have been read more than 1 billion times. Want to know more? The purchased section lists only those operating systems that you had downloaded in the past.
But here is the path to check it:. This method allows you to download Mavericks and Yosemite by logging with your Apple ID — only if you previously downloaded them from the Mac App Store. If you are signed with an Apple Developer account, you can get access to products that are no longer listed on the App Store. If you desperately need a lower OS X version build, consider creating a new Developer account among other options. Nevertheless, keep in mind that if you visit developer.
Buy a boxed edition of Snow Leopard The email edition comes with a special download code you can use for the Mac App Store. So, here are main steps you should take:. Update to Download El Capitan here. If you have a newer Mac, there is no physical option to install Mac OS versions older than your current Mac model. But as it often happens, workarounds are possible.
There is still a chance to download the installation file if you have an access to a Mac or virtual machine running that operating system. For example, to get an installer for Lion, you may ask a friend who has Lion-operated Mac or, once again, set up a virtual machine running Lion. Then you will need to prepare an external drive to download the installation file using OS X Utilities. 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. Apple set the default to help protect users from Malware or to lock down computers depending on which explanation you prefer. Apple created Gatekeeper, a program to protect users from Malware. Developers can get a security certificate from Apple through the Apple Developer program.
If a developer distributes their app on the Mac App Store, they have to follow certain guidelines to get approved. These guidelines try to keep malware out of the store.
Developers can also add a security certificate to their apps. The certificate is some code inserted into the app code. Users can set their machines to allow third-party apps downloaded from the Internet, but only if they include one of these security certificates.
Find out how to change the settings below so you can install downloaded apps from trusted third-party websites. When the menu pops up, click on System Preferences.
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