Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

star-affinity

macrumors 68000
Original poster
Nov 14, 2007
1,943
1,268
I have managed to install Windows 10 on a separate drive and the Boot Camp drivers (I know they are not for use with Windows 10) and I can start up into Windows 10 and launch the Startup Disk tool there, but the changes doesn't stick. It only works if I do this in OS X. I guess it might have to do with the rootless restrictions in El Capitan or something?

So, the problem is if I change the startup disk to be the drive with Windows 10 I don't have a way to go back into OS X after that, since I can use the Startup Manager (i.e. holding down alt during boot) since the graphics card I use (non-Mac version) doesn't give any video during that phase.

Any ideas?
Anyone here who's using a MacPro5,1 with Windows 10 and OS X and a non-Mac graphics card?
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.