MP 1,1-5,1 rEFInd to force VTd

Factionrider

macrumors member
Original poster
Sep 15, 2008
44
14
I need to use rEFInd to enable vtd for a Linux distro that was installed using MBR because I’m paranoid of secure boot certs.

As far as I know there’s no proper GUI implementation on the 5.1 using rEFInd right? Would it be possible to install and configure it to boot straight to a specific SSD with some boot parameters?
 

startergo

macrumors 65816
Sep 20, 2018
1,129
418
I need to use rEFInd to enable vtd for a Linux distro that was installed using MBR because I’m paranoid of secure boot certs.

As far as I know there’s no proper GUI implementation on the 5.1 using rEFInd right? Would it be possible to install and configure it to boot straight to a specific SSD with some boot parameters?
Only Microsoft is writing those certificates, so you should be fine on Linux. i am not sure what you mean by "enable vtd" ? Maybe this will be of help:
https://github.com/aquaplanet/iommu/wiki/Enable-IOMMU-and-VFIO
 
Last edited:

Factionrider

macrumors member
Original poster
Sep 15, 2008
44
14
Only Microsoft is writing those certificates, so you should be fine on Linux. i am not sure what you mean by "enable vtd" ? Mabe this will be of help:
https://github.com/aquaplanet/iommu/wiki/Enable-IOMMU-and-VFIO

Yeah I’ve worked through the enable guides, unfortunately when you coldboot into an MBR based system you’re using the CSM for bootcamp to emulate a BIOS.

That emulation apparently only includes VT-d (a supported intel hardware feature) if you’re warm booting from MacOS. There’s a way to force VT-d on in rEFInd but everything I’ve ever read about it was that it would result in blind boot selection.
 

hex41

macrumors newbie
Mar 5, 2019
4
1
Does this also fix the unbelievable slow performance inside virtual machines?
EDIT: For MP 3,1