ASRock Forums : B550 Pro4 w/ P3.40 BIOS https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 13 Apr 2026 13:11:42 +0000 Sun, 10 Mar 2024 03:02:54 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=32362 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[B550 Pro4 w/ P3.40 BIOS : Evening all.I believe I&#039;ve...]]> https://forum.asrock.com/forum_posts.asp?TID=32362&PID=114473&title=b550-pro4-w-p3-40-bios#114473 Author: TheBuell
Subject: 32362
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
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