Anyway, You can always use option key while booting and there will be all OS disk presented. NOTE: I didn’t find a way for my OsX to see this new Windows installation so you can’t select windows in “startup disk panel” from OsX but Windows bootcamp control panel sees OsX so you can select startup disk from there or you can select just OsX startup disk from Catalina. EFI partition on Win and OsX are different so that is maybe problem with your way to install fresh Win directly.īest way to completely clean disk is “diskpart” command from terminal that you can find on Win 10 installation media if you goes to the repair section before proceed with installation. unallocated space on complete disk) allowing Windows installer to partition disk and make all what it needs. After that I boot from DVD and proceed installing on unallocated space (eg.
My disk is X5 500gb and I have delete absolutely all partition from disk before trying to install fresh copy of Windows 10 Pro. That means no partition at all on this disk when you try to install Win 10.
As I remember I have to use “virgin” disk.
