Intel Motherboards - Asrock B760M Steel Legend shows only one boot disk

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Asrock B760M Steel Legend shows only one boot disk

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=82956
Printed Date: 08 Sep 2025 at 11:46am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Asrock B760M Steel Legend shows only one boot disk

Posted By: aggama
Subject: Asrock B760M Steel Legend shows only one boot disk
Date Posted: 25 Nov 2024 at 12:40am

Hello,
I've just built a new PC on top of a B760M Steel Legend WiFi motherboard with two M2 NVMe disks (one brand new WD Black SN850X 1TB and one old Samsung 970 Pro 512GB).
The issue is that in the UEFI, even though it identifies all the drives on the "Advanced / Storage Configuration", it allows only booting from the Samsung drive.
Swapping the drives between the M2 slots does not change the behavior. Mounting the WD Black only does not show it in the "Boot".
Any ideas on what can be happening or what to do to boot from the WD Black drive ?.
Thanks a lot in advance for your inputs

Replies:

Posted By: aggama
Date Posted: 25 Nov 2024 at 3:24am

Found the solution googling.
My WD Black disk was not GPT and did not have EFI partition !!.
Fixed all that with diskpart and it became bootable. Installing OS now ...