Tripple Boot on Two Drives

[oli.mathieu]

Hello
My Mobo is Z10-Pro
I have installed OSX MacOS Sierra on first drive
And I 've installed Window 10 then CentOS 7 on second drive
Clover is on the First Drive. It shows The MacOS and the Windows 10 but no CentOS (Linux flag is true in GUI parameters).
I've copied the Centos Folder of the EFI's Second Drive to EFI's Firs Drive : no better result!

I don't understand then relation between clover dans CentOS folder ....
Thank in advance

 

[Going Bald]

Linux boot files in the EFI partition on the Windows drive?

 

[oli.mathieu]

Yess
When I use Clover configurator to mount the EFI partition of the second drive :

But the EFI partition was created by the centOS installation :

So now I'm wondering if my Windows installation was really UEFI ...
I'm little bit lost
Thanks for you're Help
Olivier

 

[Going Bald]

Yess
When I use Clover configurator to mount the EFI partition of the second drive :
So now I'm wondering if my Windows installation was really UEFI ...
I'm little bit lost
Thanks for you're Help
Olivier

our second drive dev/disk1 does not look right for a dual boot UEFI Windows / CentOS.
Suggest you start over and make sure you select the UEFI USB Windows installer.

 

[oli.mathieu]

Suggest you start over and make sure you select the UEFI USB Windows installer.

Ok
I follow your multiboot UEFI tutorial
I erase my SSD, install Sierra and also le Capitan and a third partition for window (and CentOs Later)
I boot on Windows 10 USB installer. I click "Custom install"

Partion 2 ➧ Sierra
Partition 3 ➧ El Capitan
I select the last unallocated Space and clic next

I get an error, I reboot on the same USB Installer and I don't understand what happened on my SSD

May be it's normal but why the installation fails ....
Mystery for me
Any advice
Thanks
Olivier

 

[Going Bald]

In your first pic where you have unallocated space selected, try click on "New" button and let Windows create a new volume then install on it.

 

[oli.mathieu]

Ok
A new error message appears

But my EFI partition is FAT-32

Weird isn't it ?