I'm not sure what happened to my thread lol, It looks like the site updated and when I went to check to see if anyone responded its empty. So, I guess Ill start over. I'm trying to install Windows 10 on my 15in 2015 MBP. I partitioned the drive as Grid and then attempted to install. Windows gives me an error that it can not install because it thinks its set up as Master Boot and not Grid. I Exited and checked and it is on Grid. I had windows format that partition and make it NTFS but I get the same error.