https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 10 May 2026 14:07:34 +0000 Fri, 13 Mar 2026 15:52:31 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113469 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113469&PID=201039&title=b450-pro4-wd-black-850x-1tb-not-detected#201039 Author: Xaltar
Subject: 113469
Posted: 13 Mar 2026 at 3:52pm

You can updated to L8.02 yes, it should work just fine though I would update to
10.44 beta so you get the benefit of the updated secure boot certificates.

Your 850x will need to go in the top (ultra M.2) slot. Your operating system must
be installed in GPT mode (UEFI mode) or the drive will not be detected.

Before updating BIOS or anything else I would recommend you try the following:

1. Disconnect all drives from the system.
2. Install only the 850x in M.2 slot 1 (ultra M.2)
3. Make sure CSM is set to disabled in your BIOS
4. Press F12 during the POST process to pull up your boot menu and see if the drive
is listed.

If your operating system is installed on an MBR partition (CSM enabled) you will
need to convert the boot drive to GPT or reinstall the OS on a drive formatted
to GPT. There are guides on how to convert on youtube/google with a bit of a search.

As far as I know (I do not work for/speak for ASRock) the 850x should work in
theory as it claims to be backward compatible with PCIe Gen3. Looking on various
tech forums however it seems fairly common for this drive to not be detected
on 400 series AM4 boards. I have seen a few accounts where users were forced to
purchase a PCIe M.2 adapter card and it worked when connected to that.

If none of this helps then you can try opening a support ticket with ASRock:
https://tw.asrock.com/events/tsd.asp

They may not be able to help though if the drive is considered unsupported.

I hope this helps.
]]> Fri, 13 Mar 2026 15:52:31 +0000 https://forum.asrock.com/forum_posts.asp?TID=113469&PID=201039&title=b450-pro4-wd-black-850x-1tb-not-detected#201039 https://forum.asrock.com/forum_posts.asp?TID=113469&PID=201037&title=b450-pro4-wd-black-850x-1tb-not-detected#201037 Author: manushya
Subject: 113469
Posted: 13 Mar 2026 at 2:31pm

System Config:
ASRock B450 Pro4
AMD Ryzen 5 3400G
ADATA XPG Gammix D30 8GB X 4
Crucial MX 500 256GB
WD Blue HDD 4TB
WD Blue HDD 2TB
Corsair CX450 PSU
Corsair Spec Delta

the system is not detecting WD Black 850X 1TB in either of the m.2 slots.

there are no PCIe devices connected. Shared SATA ports are free.

asrock website says this SSD is not compatible. www.asrock.com/support/qa/Technical%20NNotes%20-%20Storage%20Device%20Compatibility.pdf

I WANT TO KNOW IF ASROCK HAS ADDED SUPPORT FOR THIS SSD IN THE BETA BIOS AVAILABLE FOR THIS MOTHERBOARD.

I have not updated BIOS after ver5 as it is working fine. can i update to L8.02 (the stable / final one) without any issue?

thanks.]]> Fri, 13 Mar 2026 14:31:33 +0000 https://forum.asrock.com/forum_posts.asp?TID=113469&PID=201037&title=b450-pro4-wd-black-850x-1tb-not-detected#201037