

( note down your Windows partition letter. ( this is the Windows partition manager ) At “Advanced options” select “Command Prompt”.Boot from the Windows installer USB, click “Repair your computer”.Right click, Shrink your Windows drive to create unallocated space for macOS (do not create a new partition yet).

Win + R, open “diskmgmt.msc” (Create and format hard disk partitions).So the problem is that the Windows EFI is 100 MB, not 200 MB so the macOS Disk Utility will fail when creating the new APFS partition for macOS, we need to resize the EFI first

Install macOS when Windows 10/11 is already installed
