You will also need an additional external drive for the installer. If you need to do a backup, do that now using Time Machine and an external drive. Sometimes, that's the desired result, especially when your Mac is running slowly because of heavy data and you want to refresh it along with the upgrade to the latest or at least a higher macOS version. Method 2: Upgrade from High Serria to Mojave via Clean Install (Bootable USB)Ī clean install ensures that your hard drive is wiped clean and formatted before installing a new version of macOS, which means your apps and data will all be gone.
We will share more details about this method in next section. Hence, this is an indirect way to upgrade to Mojave from High Serria. You need to create a bootable macOS Mojave USB drive first and use it to install Mojave on your Mac. If you can not get in your Mac or you prefer to do a clean install, then the direct upgrade is not suitable. However, it is not always working as expected and you may see error like the following one:
This method is much easier so most people use this way to upgrade to a higher version of macOS once that is no longer the latest version. May download a damaged copy of macOS Mojave app.Can not find macOS Mojave app in Mac App Store.Now, follow the instructions on your screen to complete the installation. Step 4: When the download is finished, the app (called Install macOS Mojave) will be open automatically. Step 3: Mojave installer app is pretty big and you have to wait some time to fully download it from Mac App Store. (It is recommended to use Safari browser if you're using the link.) Step 2: Go to Mac App Store and search for "Mojave" alternatively, you can open this link provided by Apple. Step 1: The first step whenever you install a new OS version is to take a back up of your data, so you can do that now via Time Machine on an external drive.
This is the official way to upgrade macOS from old version to a new version. Since the first release of macOS, Mac users can directly upgrade to a new version via macOS installer app, which you can get from App Store. Method 1: Direct Upgrade from macOS High Sierra to macOS Mojave
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