Install macOS when Windows 10/11 is already installed.When you have an empty disk and want to install the two OS When you have macOS installed and want to install Windows on a new partition When you have Windows installed first and don't want to lose all your data (should work with Windows 8 and earlier versions of macOS but they're untested) When you restart your Mac, you shouldn’t get the extra EFI Boot entry any longer.All-in-One Dual-Boot Guide for all scenarios In my case, I also have folders called Ubuntu and refind, but I’m leaving those alone.ĭelete the Windows EFI Boot entry by typing this into the Terminal: rm -rf Microsoft You will likely see a folder called Microsoft. This will put you in the directory where your Mac stores information about what operating systems you have installed. Again in Terminal, type: cd /Volumes/EFI/EFI Once that’s done, you’ll need to navigate to the correct folder. Replace /dev/disk0s1 with the correct partition you located using diskutil.

Once you find it, enter these commands one at a time: sudo mkdir /Volumes/EFI sudo mount -t msdos /dev/disk0s1 /Volumes/EFI As you can see, my EFI Boot partition is located on /dev/disk0s1 You’re looking for a partition on your main hard drive called EFI. In the Terminal, type this command: diskutil list This procedure isn’t for the faint at heart, so be careful that you type everything properly.įirst, you’ll need to locate the EFI partition, which is where your Mac stores information about what operating systems can be booted from your Mac. In order to delete the EFI Boot entry when you didn’t use Boot Camp Assistant to delete your Windows installation, you have to do some work in the Terminal. Proceed With Caution – This Procedure Can Render Your Mac Inoperable If You Aren’t Careful Finding the EFI Partition This procedure should work with all versions of macOS. We don’t need that anymore, so let’s get rid of it. If you’ve manually deleted your Windows partition within macOS, you’re probably noticing that something called EFI Boot still shows up in your Mac’s boot manager. Boot Camp Assistant makes this easy, but sometimes you might forget that the utility can also be used to delete your Windows installation. Being able to install and run Windows on your Mac can be very useful.

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