Updating boot support partitions required mac
You'll also want to perform a backup of your Mac in the (rare) case that something goes wrong.
How to back up your Mac To start, we need to grab a Windows 10 ISO file from the Microsoft website.
Use defaults for other questions (like partition codes).
The only values that need modifications are the Boot flags and step 10. These steps can be repeated if you make a mistake before you get to Step 12, otherwise start from Step 1 for these steps.