MACOS CATALINA INSTALLER HOW TO
MACOS CATALINA INSTALLER MAC OS X
MACOS CATALINA INSTALLER MAC OS
MACOS CATALINA INSTALLER INSTALL
MACOS CATALINA INSTALLER SOFTWARE

The version of macOS on the bootable drive should start to install on your Mac now.

Click on Install macOS and then click on Continue.

Your Mac will now start up in Recovery Mode.

Your Mac will eventually display the Startup Manager, click on your external drive to select that as the startup disk.

If it’s an M1 Mac then you just press and hold the on switch until you see various options. If you have an Intel-powered Mac hold down the Option/Alt key while it is booting up. Plug the external drive into the Mac that you want to install the macOS on.Now you have the installer on the external drive you can use that to install copies of macOS on multiple Macs (as long as the Macs are supported by that version).

MACOS CATALINA INSTALLER HOW TO

How to use a USB installer to update your Mac

When Terminal has finished copying the installer you will see the words Copy complete and Done appear.

“Copying installer files to disk… Copy complete” and so on will appear in the Terminal window.

Now Terminal will spend a few minutes copying the installer file to your drive.

The process can take a while, you’ll see “Erasing Disk: 0%… 10%… 20%… 30%…100%… If you want to continue press Y and then Return.

Terminal will warn that it is about to erase the drive (so make sure there wasn’t anything important on it – there shouldn’t be if you already formatted it as per the instructions above).

Terminal may also ask for permission to access the removable drive.

After typing in your password, press Enter. Note you won’t see characters appear as you type it in, that’s fine. Make sure that you use the name you have given your drive – e.g.

Copy the text that corresponds to the version of macOS you are installing into Terminal – you’ll find the text in the section below.

Otherwise you’ll find it in the Utilities folder).

Now you are ready to make your bootable installer: open Terminal (the easiest way is to press Command + spacebar and then start typing Terminal.

Wait while Disk Utility creates the partition and sets up the drive (this can take a few minutes).

(Note you will need to replace the term ‘MyVolume’ in the createinstallmedia command below with whatever name you give your drive).

Your drive will probably be called ‘Untitled’ by default, you could give your drive a name such as ‘macOS’ or ‘USB’.

Choose GUID Partition Map as the Scheme.

MACOS CATALINA INSTALLER MAC OS

Choose Mac OS Extended (Journaled) as the Format.

Select the root drive in the sidebar (the next step won’t work if you only select the volume).

Now you will see the external root drive in addition to the volume below it. Choose Show All Devices from the options.

Before this next step, note: if you are running High Sierra or later you will need to click on the View drop down below the close minimise buttons.

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!

MACOS CATALINA INSTALLER SOFTWARE

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.

MACOS CATALINA INSTALLER MAC OS X

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.

Macos catalina installer