How do I delete a Windows partition? I tried to install Windows 10 with Boot Camp and I got an error. When I tried to reboot my MacBook and held Alt, I have two partitions: MacintoshHD and Windows. If I click on Windows I have a blue Windows screen with "Recovery". So how I can delete this partition?
Close all open applications;
Open Boot Camp Assistant (click Continue);
Select Remove Windows 10 or later version;
Click Restore if your Mac has one internal disk, otherwise select the Windows disk and select Restore disk to a single macOS partition, and then press Continue.


It is recommanded to do a backup before doing so.