X370 Taichi, CSM menu disappeared from Boot tab
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=10488
Printed Date: 10 Aug 2025 at 10:52pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X370 Taichi, CSM menu disappeared from Boot tab
Posted By: garych
Subject: X370 Taichi, CSM menu disappeared from Boot tab
Date Posted: 23 Dec 2018 at 4:07am
|
I've just installed P5.10 BIOS on X370 Taichi. After disabling CSM and enabling Above 4G decoding, which was in the same menu with CSM options, the CSM menu just vanished after rebooting. |
Replies:
Posted By: Isoceles
Date Posted: 23 Dec 2018 at 2:40pm
| This is supposed to happen, since it's not possible to use any legacy mode (CSM)features in 64bit mode. Unfortunately the ASRock firmware does not bother to explain this at all... |
Posted By: garych
Date Posted: 25 Dec 2018 at 7:29am
|
I'm aware of that, but it's not the problem I have. For some reason Above 4G decoding option sits inside the CSM menu, and after you enable Above 4G decoding the CSM menu itself is gone after reboot, therefore the Above 4G decoding option is also gone, so you have to clear CMOS in order to bring it back. |
Posted By: teamchris
Date Posted: 14 Dec 2020 at 7:11am
|
I have this problem as well. Did you ever figure out a solution? I need to disable CSM so I can enable 4G decoding, but the CSM menu entry has disappeared 
|