Hello,
Due to a particular "Super Moderator" that thinks an Asus Rampage V Extreme motherboard is a G750JX laptop, and thus closed my thread, I am reposting below:
"Hello,
I have updated my BIOS from version 1601 to 1701. Upon doing so, my Macintosh partition was no longer recognised, as well as my EFI partition with the Clover bootloader. The partitions are still there, as I have checked with Ubuntu. I have a triple-boot system (Windows 10, Ubuntu 14.04, and OS X 10.10). I can still access Windows and Ubuntu through the boot menu. My computer will also not boot if the OS X install USB is present in the system; the system will hang until it is removed (I have left it on overnight with no change). I have tried re-enabling CSM (I turn it off since all three OSs are UEFI on a GPT disk) with no change.
Please fix, Asus!"