Launch Disk Utility (press Command + spacebar and start to type Disk Utility).Plug in an external drive with at least 15GB space as that’s how much the installer will require.Now you have the installation files, we can move onto the process of making the bootable installer. How to create a bootable installer for macOS A disk image named InstallOS.dmg will download and once it does you need to locate the pkg installer inside the disk image. If it is already open make sure that you close the Mac App Store before clicking on any of these links or they won’t work.Īpple provides dmg files of these older macOS versions – you need to download them in Safari. Luckily it can still be done, and we explain This is because when High Sierra launched Apple stopped making older versions of the OS available to download via the Mac App Store. With macOS Catalina, Mojave or High Sierra installed it’s a little tricky to get the installation files for older versions of macOS. When the installation starts the files will be disposed of, so you need to step in before hand! You will also be able to download the installer via Software Update if you haven’t yet installed it.ĭownload the installation files, but make sure you stop before the actual installation starts. When it is available you will be able to find it on the Mac App Store. MacOS Ventura will be available to download from 24 October 2022. How to download old Mac OS X and macOS versions. Below we’ll look at how to get Monterey installers as well as how to get older versions of the macOS or even Mac OS X.
How to get macOS installer filesĪs we said already, how you get the installation files will depend on the version of macOS you are running currently and the version you want the installer for. It goes without saying that you will need an internet connection to download the software and you may need it while installing the version of macOS if it needs to check for firmware or confirm your iCloud credentials.
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