The supported method is to use BootCamp Assistant. You can find more info in this post: How to Backup Mac to an External Hard Drive.For quite a long time now, Apple supports running Windows on your x86-based MacBook. I chose to create two partitions on my Seagate Expansion one for backup, the other for personal use. You should see multiple disk icons show up. To check whether the operation is really successful, go to your Mac desktop.This post explains how to install Windows on a 2019/2020 MacBook (Air) equiped with a T2 security chip without using BootCamp Assistant.Opera for Mac, Windows, Linux, Android, iOS. Other reasons could be dropped support for older MacBooks, the ability to use a custom/modified Windows installation or if you want to install on an external drive. For example if you want to get completely rid of macOS.
I'Ve Ed Microsoft , Partition Download Windows Disk>.As Apple released the M1 ARM-based CPU and related Mac lineup, the 2019/2020 models might be the last ones to support running Windows. > In bootcamp you will have to download windows disk on your MacBook i.e also freely available. Here are the steps to re-download Lion.Bootcamp is the only method which is prescribed by apple. So, assuming that you already downloaded and installed Lion, when you go to the App Store, and look at your Purchases section, Lion will show as Installed (see the picture above). How To Re-Download Mac OS Lion.Get the Model Identifier for your MacBook As this helps to understand the bigger picture following the below steps: High Level processAs the procedure is quite long, let’s first list the tasks we need to go through in order to successfully complete this. Additional PC running Windows (or a VM) to prepare the installationThe screenshots in this post are based of a MacBook Air with a fresh installation of macOS 11, better known as Big Sur.We will use that in the next step.To do so, in macOS, navigate to the apple icon in the left top corner and click on “About this Mac”:In the next dialog, click “System Report” and you will find your Model Identifier, in my case: MacBookAir8,2. Prepare and install Windows Step 1) Get the Model Identifier for your MacBookIn order to make sure we download the right set of drivers for Windows, suited for your MacBook model, we first need to get it’s identifier. Run Windows update and install mandatory and optional updates to load the rest of the driversAdditionally, at the end of the article, I will also mention how to dual boot between Windows and macOS and how to properly clean up the Windows installation if desired. Install the base required drivers for minimal functionality Boot from the USB-drive, load the driver for the SSD and run through the installer Repartition the SSD on the MacBook to reserve a place to install WindowsHere you can choose to use the whole SSD for Windows or to have dual boot with macOS Although the GitHub page mentions that Brigadier will automatically install 7zip, this did’t seem to work as expected and caused an error: “SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version”. This tool has been developed mainly for use on Apple hardware that no longer (properly) supports Bootcamp.Brigadier makes use of 7Zip internally in order to extract the drivers once downloaded. Again, there are several methods to accomplish this but I found the easiest to use a tool called Brigadier. You can simply download it from Microsoft’s website: After downloading the tool, you can launch it and click through the steps to create a standard USB-drive for installing Windows:Once this part is done, we need to get the drivers for our MacBook and copy them to the USB drive as well. Next to that, as mentioned, we need it to contain the required drivers to get through the installation and get us connected to the internet so we can get the additional, missing, drivers.First part is no different than any other bootable USB drive with a Windows installer and the easiest method is to use the Windows Media Creation tool. Step 2) Prepare a bootable USB driveTo launch the Windows 10 installation, we need to create a bootable USB drive containing the installation files. Step 3) Disable secure bootSince 2018, Apple is equipping their devices with a T2 security chip. To have them handy at installation time, copy them to the USB drive which you used with the Windows Media Creation Tool earlier. Keep in mind that this is case sensitive!As a result, if all went well, you should now get a new folder, called BootCamp-xxx in the directory from where you launched Brigadier:These are all the required drivers to complete the installation, including the BootCamp tool for Windows. Distribution 061-26579 supports the following models: MacBookAir8,2.As you can see, you need to pass the exact Model Identifier on the command line to start Brigadier. After some time you should end up in recovery.From here, you can navigate to Utilities > Startup Security Utility in the top menu bar:After authenticating with your administrator password, under Secure Boot, change the setting to No Security. To do so, turn on or reboot your laptop and hold down command + r at the same time:Wait until you see the Apple logo and progress bar, then release the keys. Also by default, booting from external media, like a USB drive, is not supported.To change the boot-related security features in the T2 chip, you can boot your MacBook in recovery mode. One of those features is to protect the boot process by only allowing Apple-signed operating systems.In order for us to install a copy of Windows, we first need to disable part of this security and explicitly tell the T2 chip to allow starting other, non Apple-signed, operating systems. It allows, for example, to save encryption keys or the signatures for the touch ID sensor in a secure way. Finder for ftp macFrom recovery mode, choose to open Disk Utility and change to view all device instead of just the volumes:For option 1) Windows only, on the left side, select the SSD in your system and choose erase on the right side of the screen:In the next screen, set the type to MS-DOS (FAT) and click apply. Option 2) Dual boot: Resize the APFS container and partition the freed up space for Windows.In case you are not yet in recovery due to the previous step, first boot into recovery mode (see step 3). Option 1) Windows only: Erase the whole APFS container and create one big partition for Windows.This will remove the ability to use macOS but will give all space available to Windows. In order to have space to install Windows, we have two options at this point: In the container, it is possible to have different volumes used by macOS. After closing the window, the changes are immediately applied:Here, you could perform a reboot, back to macOS but we need to be in recovery as well for the next step, so better to stay… Step 4) Repartition the SSD/diskA default macOS installation, since macOS High Sierra, will partition the whole disk or SSD as an APFS container. Change the type to MS-DOS (FAT) and click Apply. You can simply select the SSD again and click on partition once more. Give a label which you will remember and to apply the changes, simply click apply and choose to continue.I did notice that using Big Sur, the actions described above will always fail in Disk Utility with an error: Operation failed… It looks like there is a bug/defect in Disk Utility:In case this happens, you can see that instead of creating a new FAT partition, Disk Utility created another APFS container. Disk Utility will automatically change the size of the APFS container if there is enough free space available. We can simply add another volume by clicking the + icon below the pie chart, Next, change the type to MS-DOS (FAT) and set the size as desired. Which contains the macOS installation.Now is the moment to connect the prepared USB drive to your system. Here you should see “Macintosh HD”. This should bring us into the boot loader. In this step, we need to start the Windows installation by booting up the system from the USB drive.We can restart or start the MacBook by holding down the Option key.
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