On: CentOS Linux 7.5 (1804) Released

[Kostic]

Any specific reason why you aren't using latest Fedora instead of CentOS?

If you want to stick with CentOS, I would suggest you try with Secure Boot turned off.

[eatandwonder → Kostic]

> try with Secure Boot turned off

I tried. I don't have the details, but no luck. Thanks.