Lavertyg, I have spent the most part of the last 3 days experimenting and have finally got El Capitan to boot from my P8H61-M Pro board using UEFI boot. I am beginning to think that Asus motherboards are not yet compatible? I think the latter worked better but I had problems with both. I have tried using both OsxAptioFix2.efi and OsxAptioFix.efi. In the Clover FAQ on their WiKi is states that this is because 'Your EFI variant does not work natively with Clover.' It then advises to 'Use one of the available drivers to fix your EFI memory map. One of the errors I get is the system hanging at Error allocating.pages messages. I managed to get to a point where I could boot Yosemite, but not El Capitan nor my Windows 7 or Windows 10 partition. I did manage to install El Capitan into a spare partition though and I have spent probably some 12 hours over the last two days experimenting with the EFI on my OSX HDD using various flags and also that latest version of Clover. Can't boot to anything using the UEFI partition.
I also found that building the USB with legacy mode was the only way to boot into the installer. I think that the 67 board has the more advanced chipset, so obviously that's not the answer. Lavertyg, sorry I don't know the answer, but I have had the same experience with my Asus P8H61-M Pro. Building a CustoMac Hackintosh: Buyer's Guide
