I restarted and I am still on El Capitan. The installer said that it was successful. However, so far my computer is not switching to Sierra. I was very happy to find out that I could still upgrade to an older OS. If you need it in future, or you could just make a copy of the Install OS X Sierra.app prior to installing and moving it to The copy of the install app self deletes after installing Sierra, so make sure you keep a copy of the InstallOS.dmg To start the installation of Sierra double click on the Install macOS Sierra.app. You want to eventually install Sierra on, that is for later.) The disk that you are booted to at the time. (If the installation window asks which disk you want to install to, you must pick Install macOS Sierra.app which you will find in your Applications folder. This does not install Sierra but uses the InstallOS.pkg to create the That and an installation window will open, read and follow the prompts, When downloaded open to get InstallOS.pkg, double-click on The next section can only be done on a mac that is capable of running Sierra,Ī mac that came preinstalled with an OS later than Sierra will refuse to do the next bit. This downloads InstallOS.dmg to your Downloads folder.
Go to Download macOS and click on macOS Sierra 10.12 How to get old versions of macOS – Apple Support If you do have an operating system on your mac and it is functioning then you can download If you want Sierra follow the instructions below, but any mac that can run macOS Sierra can run macOS High Sierra. You are meant to click on the blue links provided in Neils post above.
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