https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 23 Apr 2026 07:37:26 +0000 Thu, 05 Dec 2019 20:27:01 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=12890 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=12890&PID=70765&title=epycd8-2t-cannot-disable-secure-boot#70765 Author: gordan
Subject: 12890
Posted: 05 Dec 2019 at 8:27pm

OK, I figured this out. The problem wasn't secure boot at all - the problem is that this motherboard is extremely finicky about USB storage devices it works with. The problem is particularly bad with USB3 devices and the faster they are the less likely they seem to work.

I eventually found a slow USB2 storage device to install from that wasn't erroring out.

As far as I can tell this is a firmware bug.]]> Thu, 05 Dec 2019 20:27:01 +0000 https://forum.asrock.com/forum_posts.asp?TID=12890&PID=70765&title=epycd8-2t-cannot-disable-secure-boot#70765 https://forum.asrock.com/forum_posts.asp?TID=12890&PID=70026&title=epycd8-2t-cannot-disable-secure-boot#70026 Author: gordan
Subject: 12890
Posted: 15 Nov 2019 at 10:25pm

Hi,

I'm trying to install CentOS on the EPYCD8. I cannot seem to disable Secure Boot bully on this board. I erased all the keys which puts it into "setup mode", but even so when I try to boot the installer ISO, it says that vmlinuz has invalid signature.

The BIOS seems to be the latest: 2.30.

How do I disable secure boot on this board?]]> Fri, 15 Nov 2019 22:25:55 +0000 https://forum.asrock.com/forum_posts.asp?TID=12890&PID=70026&title=epycd8-2t-cannot-disable-secure-boot#70026