Hitachi Compute Blade 2500 series, Compute Blade 500 series Installation Manual page 31

3 Select the underscored line and press E key.
.
4 Boot option setting menu appears.
.
Delete "intel_iommu=on" and "amd_iommu=on" from the boot option,
and press Enter.
5 Enter B key when the following window appears.
.
Hitachi Compute Blade Series OS Installation Guide for Red Hat Enterprise Linux
Red Hat Enterprise Linux 6
2-11