(I have the Optiplex 760 SFF)
Okay I managed to destroy the installation of both haha. I could make Windows 8 (or server 2012 R2 in my case, but it is essentially the same) boot while Yosemite installed. Then it boots from the partition where Windows is installed to (and not the EFI partition) But of course Yosemite will only boot when I use an USB-drive.
I can make Yosemite boot with clover, then it boots boots with clover from the EFI partition. Yosemite works fine then but Windows won't boot. I can get the Windows partition in the clover list (when I put scan with Clover Configurator to legacy) but it won't boot Windows cause it will say the MBR is broken or faulty or something like that. I have tried hours to make it both bootable.
But now I did something and I can't get Windows to boot again haha.. And I've put so much effort in it to make Server 2012 R2 usable for desktop use, lol. Tried all the fixboot/fixmbr/scanos/rebuildbcd and even the bootsect.exe /NT60 stuff but nothing. Linux boot repair also didn't fix the problem.
So my question is, is here anyone who got this Optiplex 760 working with dual boot? I only have place for one harddisk (SFF). I also don't have the \EFI\Microsoft\Boot\bootmgfw.efi, I guess this is because of the lack of UEFI support? What happens if I manually add this file?
I used GUID like mentioned in the guide, why do we need to use this and not MBR?
Would chameleon or something make it possible to use dualboot?