If you are going to keep some existing partitions, then create free space or contiguous partitions which can be deleted during the Windows installation.If you do not wish to use the Boot Camp Assistant to install Windows 10 to the internal drive, then apply the following steps. Copy the files from the Windows Support Software download and Windows 10 ISO to the flash drive.Use the Master Boot Record scheme and ExFAT format. Download the Windows 10 ISO from this website.Use the Boot Camp Assistant to download the Windows Support Software (the drivers).If you wish to create a USB Windows 10 installer, the process if fairly simple.
