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 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. MacOS Monterey, which became available to install on 25 October 2021, is available to download from the
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. In Disk Utility use Images -> Convert.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.In another Finder window eject the sparse bundle.Layout the app and /Applications icons to match your background image. Background images often contain text such as "Drag App to Application". Also add a background image if you like using View Options.Using View Options set to always one in icon mode.Make a link to /Applications in the image.Use Disk Utility to create a new empty sparse bundle disk image.
You can get apps to help you build them, but its not too Hard with Disk Utility, you just need to mess around a little to make it look nice. dmg's are a good and popular way to distribute the apps - user double-clicks, drags app, ejects just as they would a USB stick, done.
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