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frinnst
Contributor
Contributor

How to confirm IOMMU is really disabled

My colleague installed ESXi 5.1 on a remote customer site last week. Due to the crappy hardware he had to boot the installer with noiommu.

Since we don't have kvm access to the host I want to make sure it can survive a reboot and not hang during boot (as it does without noiommu).

I don't see any options relating to iommu under Advanced -> VMkernel/Boot. Maybe this is expected since the installer was run without iommu?

Anyways, suggestions on where to look/change this would be appreciated!

Thanks

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cykVM
Expert
Expert

If you could ssh into the host you may check boot.cfg file found in /bootbank/boot.cfg

There should be a line in that file starting with kernelopt= which should have the noIOMMU parameter, e.g.

kernelopt=no-auto-partition noIOMMU

cykVM

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