I bought this device specifically for the purpose of creating a sophos UTM. The sophos UTM runs on an isolinux variant. I have attempted to boot the installer CD with no success. I tried thumb drive as well. The installers work on any other PC but not this one. I am using the latest V10 bios and I am properly setting my boot order. It seems to be a problem with this BIOS not understanding the CD since the CD works on any other device.