Sunday, March 7, 2010

vSphere iommu error on dell optiplex 760

Once the installation of the vSphere is completed I got the following error on the console.
While loading its shows "Failed to load iommu driver"

cpu1:....: Initialization for vtd failed with -1"

To fix this disable the VT for Direct I/O from the BIOS

1) Reboot the esx host, press F12 and go to BIOS

disable "Virtualization support --VT for Direct I/O"

save and reboot

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