diff --git a/files/mnt/p1/boot/grub/grub.cfg b/files/mnt/p1/boot/grub/grub.cfg
index 763c04c6..3814facc 100644
--- a/files/mnt/p1/boot/grub/grub.cfg
+++ b/files/mnt/p1/boot/grub/grub.cfg
@@ -70,7 +70,7 @@ function set_gfxpayload {
   fi
 }
 
-set RR_CMDLINE="earlyprintk earlycon=uart8250,io,0x3f8,115200n8 console=ttyS0,115200n8 root=/dev/ram rootwait pcie_aspm=off net.ifnames=0 nox2apic nomodeset"
+set RR_CMDLINE="earlyprintk earlycon=uart8250,io,0x3f8,115200n8 console=ttyS0,115200n8 root=/dev/ram rootwait pcie_aspm=off net.ifnames=0 nox2apic nomodeset iommu=off intremap=off"
 
 search --set=root --label "RR3"
 if [ -s /zImage-dsm -a -s /initrd-dsm ]; then