

And just to confuse matters further, you can get the best(ish) of both worlds and run your Boot Camp Windows installation using Parallels, without having to reboot the entire system.

Why have I got two lots of Windows 10 on the MacBook? Because a Boot Camp installation and a virtual Windows 10 running in Parallels Desktop have different strengths and weaknesses, which make it worth the extra storage space sacrifice. That noise you can hear is Steve Jobs spinning in his grave at 7,200rpm. Not sure what to do now and any suggestion would be welcome.There are three operating system instances running on my Mac – two of them are Windows 10. I've already done a deletion of Bootcamp and a then did a fresh install. Windows installer (from Microsoft's download page) is Win10_1903_V1_English_圆4.iso This is on my MacBook Pro Early 2015, 2.7 GHz i5, 8 GB RAM My thinking now is that this might be because I have FileVault turned on for MacOS. The only way to boot into MacOS is to reboot and hold down "option". I have tried to run this as administrator (via File Explorer right-click and via cmd), tried rebooting, updating bootcamp/Windows, and may other way to get the Control Panel started. Make sure you have administrator privileges and try again." You may not have privileges to change the startup disk. "An error occurred while trying to access the startup disk. Once the install was done I tried to launch the Boot Camp Control Panel and got the error: Once the install is complete, the drivers installed fine and a final reboot was completed without issue. I just installed Windows 10 with Boot Camp.
