Reader Steve S. Is finally ready to complete his transition from Windows to the Mac.

How can the answer be improved? Use Boot Camp Assistant to remove Windows from your Mac. WARNING: Back up all important data stored on your Windows partition before you remove.

He writes: When I got my iMac three years ago, I was moving from a Windows-based experience. Naturally, I made a partition, installed Boot Camp, and set up 250GB of my drive for Windows.

Three years later, I’m all Mac—no need for anything on the Windows partition. How do I delete it?

Getting rid of your Boot Camp partition is quite easy. Make sure that no user accounts other than your regular administrator’s account is logged on. Also, if you want any data stored on that Boot Camp partition, now’s the time to back it up. (Time Machine doesn't back up Boot Camp partitions.) Launch Boot Camp Assistant (found in the Utilities folder inside your Applications folder), click the Continue button in the first screen, select the Create or Remove a Windows Partition option in the next screen, click Continue again, select the drive that has your Boot Camp partition, enable the Restore Disk to a Single Mac OS Partition option, and click Continue.

You’ll be prompted for your administrator’s name and password. Click OK and Boot Camp Assistant will restore the disk to a single Mac OS partition.

If you removed your Windows installation manually from your Mac, without using Boot Camp Assistant, there’s a bit more work you’ll need to do to remove its EFI Boot entry (Image Credit: ) Proceed With Caution – This Procedure Can Render Your Mac Inoperable If You Aren’t Careful Finding the EFI Partition 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. This procedure isn’t for the faint at heart, so be careful that you type everything properly.

As you can see, my EFI Boot partition is located on /dev/disk0s1 Once you find it, enter these commands one at a time: sudo mkdir /Volumes/EFI sudo mount -t msdos /dev/disk0s1 /Volumes/EFI Replace /dev/disk0s1 with the correct partition you located using diskutil. Deleting the Windows EFI Boot Entry Once that’s done, you’ll need to navigate to the correct folder. Again in Terminal, type: cd /Volumes/EFI/EFI This will put you in the directory where your Mac stores information about what operating systems you have installed. You will likely see a folder called Microsoft. In my case, I also have folders called Ubuntu and refind, but I’m leaving those alone. Delete the Windows EFI Boot entry by typing this into the Terminal: rm -rf Microsoft That’s it.

When you restart your Mac, you shouldn’t get the extra EFI Boot entry any longer. I’m having the same issue myself.

I removed the windows entry in /Volumes/EFI but i’m still getting an EFI boot partition on the startup when holding down option. Maybe we should try running a windows 7 disk and then remove the partition from the windows 7 installer?

EFI boot no longer tries to run Windows startup, it just boots to a black screen when selected. Any solutions? I even reformatted my hard drive and restored from a time machine backup and EFI boot showed up again. I’m about to bring my computer to the Apple store for once if Read more ».

Hey Patrick, you’re having the exactly the same problem I’m having, it boots to a black screen. I was able to install Windows 10 (without sound unfortunately) by creating the partition o Disk Utility and then formatting it using the windows install partition creator. But now I have three entries on my boot loader, two for Windows and one for Sierra. Since I couldn’t remove the first Windows entry, I could only install Windows on EFI mode, which cause, in my case (MacBook Pro 2011), to have no sound on Windows.