Yes, UEFI is supported and I was sure to select the loader which was labelled UEFI. It is an Asus P8Z77-I board.
There was a "normal" selection for the USB (which did not list UEFI) and a "UEFI" version of the USB stick, which I selected. As I said, the only difference in what I chose was "Install for UEFI Only" due to it being an Asus board, which Tony recommended.
**EDIT** I believe I found my problem - I did NOT chose "Install clover in the ESP" in the configuration right below the "Install for UEFI only". That is not called out specifically in the guide (just giving a tip!). I will attempt that tonight and report back.
Okay so here is where I stand. Keep in mind that I can boot with the same media set with Unibeast no problem.
Before I attempted ANY of this, here is what I did.
1. Booted into BIOS
2. Load optimized defaults
3. ECHI Handoff Enabled (tried disabled as well, no difference)
4. Made sure ACHI was set and HPET was enabled
5. Turned "Secure Boot" to "Other OS" (tried Windows as well, no difference)
Here is what I attempted:
Attempt 1:
Same settings as in Post 1 to make Install Media, however I tried "Install to UEFI Only" first option. Setup config per standard config and edited to add my ROM and MLB values. Set kexts based on instructions. Disabled Intel injection as I am using a native 660 Ti. Rebooted. Brought up boot menu via F8, selected USB stick (UEFI version). Screen flashes what looks like a menu for half a second and reboots (non successful boot). Attempted to boot the non UEFI version as well, same thing happens.
Attempt 2:
Same settings as in Post 1 to make Install Media, however I tried "Install to UEFI Only" first option AND "Install in ESP". Setup config per standard config and edited to add my ROM and MLB values. Set kexts based on instructions. Disabled Intel injection as I am using a native 660 Ti. Rebooted. Brought up boot menu via F8, selected USB stick (UEFI version). Screen flashes what looks like a menu for half a second and reboots (non successful boot). Attempted to boot the non UEFI version as well, same thing happens.
Attempt 3:
Same settings as in Post 1 to make Install Media, used the EXACT SAME SETTINGS as is listed. Setup config per standard config and edited to add my ROM and MLB values. Set kexts based on instructions. Rebooted. Brought up boot menu via F8, selected USB stick (UEFI version). Screen flashes what looks like a menu for half a second and reboots (non successful boot). Attempted to boot the non UEFI version as well, same thing happens.
Any ideas would be MUCH appreciated. As I said, I can use Unibeast just fine on this system, even booted into the Yosemite Installer fine with the same media as a Unibeast drive. I just NEED iMessage for my day to day business and interaction with clientele.
Thoughts?