GA-Z77M-D3H Stuck at BIOS/UEFI on Boot when HDD Connected

[pgr1]

GA-Z77M-D3H Stuck at BIOS/UEFI on Boot when HDD Connected after Unibeast

I was able to boot from the USB drive and detect the 3TB WD Caviar Green in Disk Utility after enabling AHCI in the BIOS. I formatted the drive and partitioned it into three installing OSX into the first one. Windows 8 RTM was installed on the drive prior if that is a concern. Install went without a hitch, however I cannot get past the UEFI/Boot screen when the drive is plugged in.

I cannot access setup (del) or the boot selection menu (F12) when I power on (stuck at UEFI options screen). If I unplug the HDD I can boot to Unibeast installer on USB without any issues. It's as if something was installed on the HDD that is preventing me from booting. Anyone experienced this?

 

[pgr1]

I plugged the drive into an external enclosure and it reported the total size as 801.57GB, which seems to indicate some kind of 4K sector size issue. I formatted the drive and re-inserted it into my Hackintosh which would then boot up as usual, trying the install again.