A solução em esta resposta resolve problema. Especificamente:
By security, I added all the "drivers_x64" folder by doing
./install.sh --alldrivers
at the rEFInd installationOn my EFI partition under Yosemite (stored on
/dev/disk0s1
), I renamed the "refind" folder to "BOOT"Inside that folder, I renamed "refind_x64.efi" to "bootx64.efi"