Macos Catalina Bootable Usb Windows 10

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  • Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing. Turn on your Mac and continue to hold the power button until you see the startup options window, which shows your bootable volumes. Select the volume containing the bootable installer, then click Continue.
  • Mac os catalina create bootable usb windows 10 I had this problem with a friend computer, it was an old iMac and I'll tell you it is not going to be easy. The first thing you have to do is make sure what model you have (the year when your computer has been released) then check on the official apple website to see what is the latest macOS or Mac.

January 1, 2020

Create Windows 10 installer USB stick on macOS Catalina. Fri, 24 Apr 2020. Today my Windows 10 bricked itself after I enabled Hyper-V, I had no choice but to reinstall it. I only had my Macbook to create the USB stick. First of all, find out which device is your USB stick.

Making a Bootable Windows 10 USB on macOS X Catalina

Today I went to my 88 year old father’s house to upgrade his Windows 7 computer to Windows 10. I offered him a new MacBook Pro but he did not want to learn anything new. I have a Windows 10 ISO and since macOS X Catalina does not support 32bit apps anymore, I could no longer use UneBootin because it is a 32bit app.

As you can see with the International NO sign on the executable, meaning “NO BUENO”. I am sure there are other utilities to use to get this done, but I chose this one.

I had to find a way to make a bootable Windows 10 USB installation disk. Here we go.

Macos Catalina Bootable Usb Windows 10

Head over to the CLI. I use iTerm2 however the built-in Terminal app will work fine.

The first thing we need to do is see what disk # your USB is. BEFORE PLUGGING THE USB INTO YOUR COMPUTER, type the following….

diskutil list

Create Macos Catalina Bootable Usb On Windows 10

This will show you the drive letters you have configured on your macOS device.

Make note of the disks and then plug your USB device in and re-run the command. This should give you the drive # you need for the future steps.

In my case, the disk is /dev/disk3

Writing the ISO to the USB

Macos

Now that you know the disk you are going to use we can get down to business.

First, lets unmount the USB

diskutil unmountDisk /dev/disk3

Now, enter the following command. Obviously you need to modify the path, filename and target disk.

This is going to take a while and you will think nothing is going on, be patient, grab some coffee.

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You will see the square on under the password. Just stand by. As you can see below, it took 2.1 hours.

Once complete….. and it WILL take a while you can unmount the USB again by re-typing the following command

Macos Catalina Bootable Usb Windows 10

diskutil unmountDisk /dev/disk3

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Unmount of all volumes on disk3 was successful

Mac Os Catalina Bootable Usb Windows 10

Hope this helps.