Installing 3 Operating Systems on my old MacBook Pro
I am trying to install a copy of Windows 10 Pro I’ve purchased on my old MacBook Pro. However, I am currently using a patched version of Catalina and because of this I cannot boot into recovery mode and enable my computer to boot from my USB drive.
In a perfect world I would be able to run my Patched version of Catalina and Windows 10 only. Is there any way to “Allow booting from external media” without going into recovery?
At this point in my research I’m near concluding that I will have to install El Capitan (the latest OS my mac can handle) and partition the drive from there. If this is the case I am wondering if it is possible, and how, to run the native El Capitan, The patched Catalina, and Windows 10 off the same SSD. Let me know if you have any insight.
Is this a good question?