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Hi, I installed CentOS 7.4 on a modern Lenovo ThinkSystem SR630 server which uses UEFI. So far so good CentOS 7.4 works fine so then I went on to install the Xen hypervisor by following the instructions from the wiki (https://wiki.centos.org/HowTos/Xen/Xen4QuickStart). Unfortunately when I reboot after having installed the xen package the system does not boot into "CentOS Linux, with Xen

Why do you need UEFI? It does not add to security "a lot" but was designed to block booting software like a "hypervisor". I used my Dell notebooks to test our hypervisor identification software (HyperCatcher if you are interested) which is bootable image. However, I was unable to boot it until I disabled UEFI. As I understand it, it will block anything from booting excepting original OS. Your Xen and our HyperCatcher are outsiders for UEFI. Mikhail Utin ________________________________ From: CentOS...

The matter of EUFI?s Secure Boot vs Legacy Boot has been briefly discussed a couple of days ago. I would ask the List opinion concerning our case. A bit of the history. We?ve been in the research of malicious hypervisor threat since 2013. We finally developed publicly available HyperCatcher freeware. It runs on specially built Ubuntu 14.4. We tried CentOS 6/7 as well. The OS was compiled to minimize the number of services and OS features to only essential to the application. The software is ISO bootable image. The problem. As of today, we recommend to switch to Legacy option before...