You also don't have to install Clover to the EFI partition, on another 2011 MBP I have a small HFS+ partition where clover is installed where I blessed the volume to have it show up in the boot menu selector --
You also don't have to install Clover to the EFI partition, on another 2011 MBP I have a small HFS+ partition where clover is installed where I blessed the volume to have it show up in the boot menu selector --