Hello,
I'm just putting this out there for all of you who use hacked or non official graphics cards in your mac pro (I'm using mac pro 5,1 RX480) as your one and only card. I searched around and couldn't find anything on this. Under high sierra and the new mac file format for SSD or hard drive (AFPS) Windows 10 will not be able to read the drive and won't be able to boot from Bootcamp to Mac OS when you are done through the bootcamp control panel like you are used to doing. Apple's official solution's https://support.apple.com/en-us/HT208123 is not an option for us non EFI graphics card users.
I painstakingly figured out a way to get around this through trial and error and this is what I cam up with. I built a bootable thumb drive of OS SIERRA which is formatted as HFS+ (Mac os Extended) which Windows can read. In Windows plug in your OS SIERRA flash drive. Go to Bootcamp control panel and select the bootable thumb drive and select restart. It will take some time to boot into your thumb drive. From there go to the apple menu and select shutdown. Unplug your USB thumb drive (Very Important). Now when you start back up it should boot to mac OS right away. I tried unplugging the windows hard rive to just leave the mac but for some reason it kept getting stuck and asking for a boot volume. My way seems to allow the system to cash the mac os so when you shut down and restart if finds the first mac os and boots.
Kinda irritated in all of this since in Sierra I never had this problem. This should all have been ironed out by apple since the OS has been out for 3+ months. I'm surprised they don't have a driver or something. Not sure if it every will or if this is Microsoft's job to get this done or not. Submit your feedback to apple and if you have a better way you found please let me know.
I'm just putting this out there for all of you who use hacked or non official graphics cards in your mac pro (I'm using mac pro 5,1 RX480) as your one and only card. I searched around and couldn't find anything on this. Under high sierra and the new mac file format for SSD or hard drive (AFPS) Windows 10 will not be able to read the drive and won't be able to boot from Bootcamp to Mac OS when you are done through the bootcamp control panel like you are used to doing. Apple's official solution's https://support.apple.com/en-us/HT208123 is not an option for us non EFI graphics card users.
I painstakingly figured out a way to get around this through trial and error and this is what I cam up with. I built a bootable thumb drive of OS SIERRA which is formatted as HFS+ (Mac os Extended) which Windows can read. In Windows plug in your OS SIERRA flash drive. Go to Bootcamp control panel and select the bootable thumb drive and select restart. It will take some time to boot into your thumb drive. From there go to the apple menu and select shutdown. Unplug your USB thumb drive (Very Important). Now when you start back up it should boot to mac OS right away. I tried unplugging the windows hard rive to just leave the mac but for some reason it kept getting stuck and asking for a boot volume. My way seems to allow the system to cash the mac os so when you shut down and restart if finds the first mac os and boots.
Kinda irritated in all of this since in Sierra I never had this problem. This should all have been ironed out by apple since the OS has been out for 3+ months. I'm surprised they don't have a driver or something. Not sure if it every will or if this is Microsoft's job to get this done or not. Submit your feedback to apple and if you have a better way you found please let me know.
