Dual boot with GRUB in UEFI mode

Hi,

I would like to dual boot Yosemite & Linux in UEFI mode
Currently the only way to do it is to enter the BIOS and select the HD for Yosemite to boot.
Then I get to Chimera (no linux option there).

I looked at the installation disk of Yosemite and found 3 partitions

1) the EFI system partition, which is empty
2) the actual big partition for the OS
3) a recovery partition

The entry in the BIOS boot order (efibootmgr) is

Boot0001* Hard Drive BBS(HD,,0x0)

which I think means that it boots in BIOS mode (i.e. MBR), not EFI

When I try to chainload the MBR from GRUB (EFI mode) with

set root=(hd0)
chainloader +1

I get: Invalid EFI path

Is it possible? Boot Yosemite from GRUB-UEFI?

If you are using Chimera to boot OS X you are booting it Legacy Mode.
If you want to boot in UEFI mode use Clover.

I see,

and it does not matter which one I used to install Yosemite with.

I can boot with chimera, install clover bootloader and this will work.

Moreover Chimera will stay there in case I get clover wrong.

Am I correct?

mariofutire said:

I see,

and it does not matter which one I used to install Yosemite with.

I can boot with chimera, install clover bootloader and this will work.

Moreover Chimera will stay there in case I get clover wrong.

Am I correct?

Click to expand...

Yes. You can use UniBeast USB installer to install OS X and install Chimera/Chameleon as boot loader or install Clover as boot loader - makes no difference.

Likewise, you can use a Clover USB installer to install OS X and install Clover as boot loader or install Chimera/Chameleon as boot loader - again, makes no difference.

Or, you can install OS X using either and then use a USB with Clover or Chimera on it and never actually install the boot loader to the HDD/SSD you have OS X installed on.