Hello dear, will you please tell me how you get your r9 280x card work on maverick? I have the same card and I am new to hackintosh. I have managed to make everything work but graphics card is not working. and I have tried to move the bootloader to EFI partition following the instruction given here: http://www.tonymacx86.com/401-install-bootloader-extra-efi-partition/ but for some reason, I got an error after I use this commad "fdisk -f boot0 -u -y /dev/rdisk0". I installed maverick using niresh maverick, I did not use unibeast to install maverick. maybe that is why it failed when I followed that tutorial. Now I am very very desperate. I do not know how to get it work. Please please tell me how I can make my graphics card work. My System specs: core i5 4590 MB : Asus H81M-E SSD: transcend 370s 256 GB Graphics: Sapphire Vapor-x R9 280X RAM: Corsair Vengeance 8GB Please help me. thanks a lot.