SlavaRublev

I don't have such option in my BIOS. Here are all my menu screens:

As in the post's title, I'm having the IOMMU always being reported as disabled. Intel Virtualization Technology is switched on in the BIOS. I've already tried adding to syslinux.cfg all the following combinations between append and initrd=/bzroot, one at a time. Still no luck. iommu=pt iommu=1 iommu=pt iommu=1 intel_iommu=on iommu=1 iommu=pt intel_iommu=on Here are my specs (pasted from unraid): Model: Custom M/B: PEGATRON CORPORATION Eureka3 Version 1.02 - s/n: 101578460001374 BIOS: American Megatrends Inc. Version 5.09. Dated: 08/19/2009 CPU: Intel® Core™2 Quad CPU Q9300 @ 2.50GHz HVM: Enabled IOMMU: Disabled Cache: 128 KiB, 6 MB Memory: 8 GiB Other (max. installable capacity 8 GiB) Network: bond0: fault-tolerance (active-backup), mtu 1500 Kernel: Linux 5.19.17-Unraid x86_64 OpenSSL:1.1.1s Uptime: 10 minutes I attach you the diagnostics ZIP in case someone can help me out. Thank you in advance! nas-diagnostics-20230414-1646.zip