AMD Motherboards - B550 Pro4 w/ P3.40 BIOS

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B550 Pro4 w/ P3.40 BIOS

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=32362
Printed Date: 23 Jul 2025 at 2:07pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B550 Pro4 w/ P3.40 BIOS

Posted By: TheBuell
Subject: B550 Pro4 w/ P3.40 BIOS
Date Posted: 10 Mar 2024 at 3:02am

Evening all.

I believe I've found a bug with the BIOS with regards to NVME drives.

If I reformat the NVME drives to 4K sectors, the BIOS will fail to list them as bootable drives when I press F11.

When I put back 512B format for these drives, the BIOS successfully finds and lists them after I press F1 on boot.

I have upgraded the BIOS to P3.40 and the issue still persists.

I prefer 4K sectors as they're more efficient and I run virtual machines.

Any ideas or does this bug needs fixing?

These NVME drives will be used as the OS boot drives. They're:


$ fdisk -l /dev/nvme{0,1}n1 
Disk /dev/nvme0n1: 238.47 GiB, 256060514304 bytes, 500118192 sectors
Disk model: WDC PC SN520 SDAPNUW-256G-1006          
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/nvme1n1: 476.94 GiB, 512110190592 bytes, 1000215216 sectors
Disk model: PC SN520 NVMe WDC 512GB                 
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes