Give the drive a name, choose for APFS and click Erase. Then select your internal hard drive or SSD on the left side and click Erase: In recovery, we will first completely erase the current contents of your disk, so open up Disk Utility and select again to show All Devices. Now your mac will boot macOS recovery from the USB drive. It’s called install macOS and the version you chose. If all goes well, you should see an entry here for the USB drive. Hold down the alt or option key during the boot process. Now that we have the drive created, we can use it to do a clean installation on the same or a different machine.įirst insert the drive into your Mac, then reboot it (or just boot it when it’s powered down). Step 2) Use the USB drive to perform a clean installation This one can now be used to perform a clean installation of macOS on the same or another Mac. When complete, the utility will make sure the USB drive is made bootable: Same for the Volume name () which you use as destination, make sure it matches with what you entered in Disk Utility when erasing the USB drive.įor example for Big Sur to USB drive called BigSurInstall: sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/BigSurInstallĪnd another example for Catalina to USB drive called 32GBUSB: sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/32GBUSBĪfter entering the command, press enter and confirm that you want to erase the contents on the USB drive.Īgain this will take some time as all installation files will be copied to your USB drive. You can use a tab to complete the entries. Make sure you replace the with the correctly downloaded version in your path. app/Contents/Resources/createinstallmedia -volume /Volumes/ Instead, open a terminal window and enter the following command: sudo /Applications/Install\ macOS\. And in case it would have been opened automatically, you can just close it. If the OS version you downloaded is older, it won’t even let you. You do not need to run or open the application. Once downloaded, you will see a new application in finder, called install macOS and the version. This can take quite some time as the installer is usually around 10 to 15GB. Once you have found it, simply install the application from the App Store. If you want to install another or older version, you can use the following links to get directed to the correct App Store entry: If you want to create installation media for the same version as is currently installed on the device which you use to create it with, then you can simply go to the App Store and search for the OS version you have. Now that’s done, we can download the macOS installer. Download the installer of the desired macOS version Let Disk Utility erase the drive and create a fresh partition with the name you gave it. Give the drive a name, choose macOS extended, GUID as scheme and click erase: Then click your USB drive on the left side and erase: In Disk Utility, click View and Show All Devices. Insert the drive which you want to use, which should be at minimum 16GB and open Disk Utility. This is not strictly necessary but makes sure you don’t run into issues with the USB drive or remains of other experiments on it. Prepare the USB driveīefore we copy files and make our USB drive bootable, let’s start by preparing it first. The first step is to create a bootable USB drive that contains the macOS installer. Step 1) Creating the USB installer for the macOS version of choice If you are creating the USB drive on a different machine then the where you want to do a fresh installation, it’s that second one that matters. You can check on Apple’s website using the following links: So in case you want to use a version on a mac that no longer supports that, you can use this link.įirst, you will need to find out what is the latest supported version of macOS for your mac model. In an earlier post, I covered how to create the same, to install macOS Big Sur, but for unsupported models. The steps that follow will only work for a matching macOS version that is still officially supported on your hardware.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |